Upcoming Hydro DWC conversion for flowering Have Q's.

D

DmnSpawn

Well-Known Member
Ok so I'm going to Be running DWC for my flower room, I have a plant that I need to take from it's MG soil that has "Time release" nutes that are keeping me from flushing.

I'm going to add superthrive to distilled water to prevent shock. Room temp.

As far as vessels go... Tote or homer bucket?
I have both already so...
And if its an 18 gal tote 2-4 plants? I'm going to do a perpetual cycle with 4-6 flowering plants for a SOG. I have roughly 5x4 to work with but only a 55inch floor to ceiling to work with.

Only a 250W HPS so They can be fairly close, it will be air cooled and has a UL listed glass lens. With all that I think I could damn near kiss em!.

Any suggestions?

H202-aka hydrogen peroxide.
Use it or don't?
I am useing it in my cloner (3% of course) with a 8 inch bubble wand in a 2 gal tote.
I use like 1-2 tsp for that amount.

What is the correct dose?

How big of an air pump do I REALLY need.
If it's a 2 gallon tank with a 5-15 gal single outlet on a 8 inch bubble wand.
That should be plenty right?

So useing the above logic for a flowering plant if I do it in a 10 gal bucket would the same tiny pump with say x2 4-5 inch bubble discs be lacking-enough-overkill?

Air and water pump? or just air?
im going to use neopryne discs. So no growing med.


Current Grow! 03/02/09
https://www.rollitup.org/grow-journals/167095-dmnspawns-1st-grow-3x-hk.html
 
AGSteve

AGSteve

Well-Known Member
DmnSpawn said:
Ok so I'm going to Be running DWC for my flower room, I have a plant that I need to take from it's MG soil that has "Time release" nutes that are keeping me from flushing.

I'm going to add superthrive to distilled water to prevent shock. Room temp.

As far as vessels go... Tote or homer bucket?
I have both already so...
And if its an 18 gal tote 2-4 plants? I'm going to do a perpetual cycle with 4-6 flowering plants for a SOG. I have roughly 5x4 to work with but only a 55inch floor to ceiling to work with.

Only a 250W HPS so They can be fairly close, it will be air cooled and has a UL listed glass lens. With all that I think I could damn near kiss em!.

Any suggestions?

H202-aka hydrogen peroxide.
Use it or don't?
I am useing it in my cloner (3% of course) with a 8 inch bubble wand in a 2 gal tote.
I use like 1-2 tsp for that amount.

What is the correct dose?

How big of an air pump do I REALLY need.
If it's a 2 gallon tank with a 5-15 gal single outlet on a 8 inch bubble wand.
That should be plenty right?

So useing the above logic for a flowering plant if I do it in a 10 gal bucket would the same tiny pump with say x2 4-5 inch bubble discs be lacking-enough-overkill?

Air and water pump? or just air?
im going to use neopryne discs. So no growing med.


Current Grow! 03/02/09
https://www.rollitup.org/grow-journals/167095-dmnspawns-1st-grow-3x-hk.html
Click to expand...
you can never have to much air.
 
1982grower

1982grower

Well-Known Member
Actually you can have to much air. read my post about DO in the adding o2 to res thread. i'll be right back with ideal ppm.
 
1982grower

1982grower

Well-Known Member
Thought this could help. i now believe pumping too much oxygen can be harmful to plants. Def pumping straight oxygen into the water is to much i think.


Dissolved Oxygen​
When doing any water sampling test, it is important to record certain
Background Information
Dissolved oxygen (DO) is essential to healthy streams and lakes. The dissolved oxygen level can be an indication of how polluted the water is and how well the water can support aquatic plant and animal life. Generally, a higher dissolved oxygen level indicates better water quality. If dissolved oxygen levels are too low, some fish and other organisms may not be able to survive. Much of the dissolved oxygen in water comes from oxygen in the air that has dissolved in the water. Some of the dissolved oxygen in the water is a result of photosynthesis of aquatic plants. On sunny days, high DO levels occur in areas of dense algae or plants due to photosynthesis. Stream turbulence may also increase DO levels because air is trapped under rapidly moving water and the oxygen from the air will dissolve in the water.

Water temperature also affects DO levels. Colder water can hold more oxygen in it than warmer water. A difference in DO levels may be seen at the test site if tested early in the morning when the water is cool and then later in the afternoon on a sunny day when the water temperature has risen. A difference in DO levels may be seen between winter water temperatures and summer water temperatures. Similarly, a difference in DO levels may be apparent at different depths of the water if there is a significant change in water temperature.

Species such as sludge worms, blackfly larvae, and leeches are more tolerant of low dissolved oxygen levels so those species are more likely to be found in warm waters. Species that need high levels of dissolved oxygen include pike, trout, bass, salmon, mayfly nymphs, stonefly nymphs, and caddisfly larvae so those will be more likely found in colder waters.

Low DO levels may be found in areas where organic material (dead plant and animal matter) is decaying. Bacteria require oxygen to decompose organic waste, thus, deplete the water of oxygen. Areas near sewage discharges sometimes have low DO levels due to this effect. DO levels will also be low in warm, slow moving waters.

Dissolved oxygen levels are often measured in parts per million (ppm) but sometimes are given in terms of Percent Saturation. Percent Saturation is the amount of oxygen dissolved in the water sample compared to the maximum amount that could be present at the same temperature. For example, water is said to be 100 % saturated if contains maximum amount of oxygen at that temperature. A water sample that is 50 % saturated only has half the amount of oxygen that it could potentially hold at that temperature. For this project, results will be reported in ppm but if you wish to determine the Percent Saturation, you can use this DO Percent Saturation chart. Sometimes water can become supersaturated with oxygen because of rapidly tumbling water. This usually lasts for a short period of time but can be harmful to fish and other aquatic organisms.


Test Procedure
To perform the dissolved oxygen test, use a dissolved oxygen test kit. Follow the instructions provided with the kit. Record results in parts per million (ppm). Some important points to remember are:
  • Try to sample the water away from the bank and below the water surface level.
  • Be careful not to get any air bubbles in the sample during collection; it may result in a false high reading.
  • Allow the water to gently fill the DO sample bottle from bottom to top. Put a lid on the bottle while it is under water.
  • Test the DO level immediately. Biological activity in the sample and exposure to air can quickly change the DO level.
  • Repeat the DO test three times.
What to Expect
At 20 oC (room temperature) and standard atmospheric pressure (sea level), the maximum amount of oxygen that can dissolve in fresh water is 9 ppm. If the water temperature is below 20 oC, there may be more oxygen dissolved in the sample. Generally a dissolved oxygen level of 9-10 ppm is considered very good. At levels of 4 ppm or less, some fish and macroinvertebrate populations (e.g. bass, trout, salmon, mayfly nymphs, stonefly nymphs, caddisfly larvae) will begin to decline. Other organisms are more capable of surviving in water with low dissolved oxygen levels (i.e sludge worms, leeches).

DO Percent Saturation values of 80-120 % are considered to be excellent and values less than 60% or over 125% are considered to be poor
 
AGSteve

AGSteve

Well-Known Member
1982grower said:
Thought this could help. i now believe pumping too much oxygen can be harmful to plants. Def pumping straight oxygen into the water is to much i think.


Dissolved Oxygen​
When doing any water sampling test, it is important to record certain
Background Information
Dissolved oxygen (DO) is essential to healthy streams and lakes. The dissolved oxygen level can be an indication of how polluted the water is and how well the water can support aquatic plant and animal life. Generally, a higher dissolved oxygen level indicates better water quality. If dissolved oxygen levels are too low, some fish and other organisms may not be able to survive. Much of the dissolved oxygen in water comes from oxygen in the air that has dissolved in the water. Some of the dissolved oxygen in the water is a result of photosynthesis of aquatic plants. On sunny days, high DO levels occur in areas of dense algae or plants due to photosynthesis. Stream turbulence may also increase DO levels because air is trapped under rapidly moving water and the oxygen from the air will dissolve in the water.

Water temperature also affects DO levels. Colder water can hold more oxygen in it than warmer water. A difference in DO levels may be seen at the test site if tested early in the morning when the water is cool and then later in the afternoon on a sunny day when the water temperature has risen. A difference in DO levels may be seen between winter water temperatures and summer water temperatures. Similarly, a difference in DO levels may be apparent at different depths of the water if there is a significant change in water temperature.

Species such as sludge worms, blackfly larvae, and leeches are more tolerant of low dissolved oxygen levels so those species are more likely to be found in warm waters. Species that need high levels of dissolved oxygen include pike, trout, bass, salmon, mayfly nymphs, stonefly nymphs, and caddisfly larvae so those will be more likely found in colder waters.

Low DO levels may be found in areas where organic material (dead plant and animal matter) is decaying. Bacteria require oxygen to decompose organic waste, thus, deplete the water of oxygen. Areas near sewage discharges sometimes have low DO levels due to this effect. DO levels will also be low in warm, slow moving waters.

Dissolved oxygen levels are often measured in parts per million (ppm) but sometimes are given in terms of Percent Saturation. Percent Saturation is the amount of oxygen dissolved in the water sample compared to the maximum amount that could be present at the same temperature. For example, water is said to be 100 % saturated if contains maximum amount of oxygen at that temperature. A water sample that is 50 % saturated only has half the amount of oxygen that it could potentially hold at that temperature. For this project, results will be reported in ppm but if you wish to determine the Percent Saturation, you can use this DO Percent Saturation chart. Sometimes water can become supersaturated with oxygen because of rapidly tumbling water. This usually lasts for a short period of time but can be harmful to fish and other aquatic organisms.


Test Procedure
To perform the dissolved oxygen test, use a dissolved oxygen test kit. Follow the instructions provided with the kit. Record results in parts per million (ppm). Some important points to remember are:
  • Try to sample the water away from the bank and below the water surface level.
  • Be careful not to get any air bubbles in the sample during collection; it may result in a false high reading.
  • Allow the water to gently fill the DO sample bottle from bottom to top. Put a lid on the bottle while it is under water.
  • Test the DO level immediately. Biological activity in the sample and exposure to air can quickly change the DO level.
  • Repeat the DO test three times.
What to Expect
At 20 oC (room temperature) and standard atmospheric pressure (sea level), the maximum amount of oxygen that can dissolve in fresh water is 9 ppm. If the water temperature is below 20 oC, there may be more oxygen dissolved in the sample. Generally a dissolved oxygen level of 9-10 ppm is considered very good. At levels of 4 ppm or less, some fish and macroinvertebrate populations (e.g. bass, trout, salmon, mayfly nymphs, stonefly nymphs, caddisfly larvae) will begin to decline. Other organisms are more capable of surviving in water with low dissolved oxygen levels (i.e sludge worms, leeches).

DO Percent Saturation values of 80-120 % are considered to be excellent and values less than 60% or over 125% are considered to be poor
Click to expand...
sorry didn't realise he was growing fish or other aquatic organisms in his dwc. :roll:
 
1982grower

1982grower

Well-Known Member
marijuana is aquatic. at least 85 % water buy weight. Also i have read much more and just had this. Plants that grow above water can often be grown fully submerged.
 
D

DmnSpawn

Well-Known Member
AGSteve said:
sorry didn't realise he was growing fish or other aquatic organisms in his dwc. :roll:
Click to expand...
I'm Not.

His post was General. But I think it relates closer to fish perhaps? not sure.
Anyone know anything like that closer to what pot will demand?

and as far as too much air.. I was asking what would be enough to flower 1 plant through to harvest.
 
AGSteve

AGSteve

Well-Known Member
DmnSpawn said:
I'm Not.

His post was General. But I think it relates closer to fish perhaps? not sure.
Anyone know anything like that closer to what pot will demand?

and as far as too much air.. I was asking what would be enough to flower 1 plant through to harvest.
Click to expand...
his post was from googling and not experience. get yourself a good quality duel output aquarium pump and you will be happy.
 
D

DmnSpawn

Well-Known Member
AGSteve said:
get yourself a good quality duel output aquarium pump and you will be happy.
Click to expand...
rated for how many gallons? also 1 8 inch bubble wand or 2?

And I was reading your post you had a brown algae problem. How did you fix it was it in fact the light shining though the plastic?:eyesmoke:
 
1982grower

1982grower

Well-Known Member
Not from experience. i work at a hospital and can use staight oxygen patient tanks. I also live in canada. there are many hydro shops and people growing here and this has been discussed over and over. Dwc setups of home size 10 20 30 even more or less plants didn't in my opinion show any larger growth above or in the res. A simple aquarium pump will do fine. The plant will only use what it needs to maximize efficiency in absorbing nutes. I have seen people hook straight oxygen into their airline and it didn't improve over the standard aquarium pump. don't know the size of the aquaium pump but just a lrge petsmart 1 it looked like.
 
1982grower

1982grower

Well-Known Member
The buble wand size does not matter. how it diffuses does. no matter what pump you are using its the same amount of air whether 2 wands or 1. but the smaller the bubbles coming out of the wand the more surface area is touching the water and dissoving. So if you want lots of Oxygen use 2 wands that produce thousands of tiny bubbles. I know a thing or 2 about oxygen in water. i have a 300 gallon saltwater reef tank. i'm just putting an answer on here. how can more answers be worse than less
 
AGSteve

AGSteve

Well-Known Member
DmnSpawn said:
rated for how many gallons? also 1 8 inch bubble wand or 2?

And I was reading your post you had a brown algae problem. How did you fix it was it in fact the light shining though the plastic?:eyesmoke:
Click to expand...
yeah light coming thru, high rez temp and not doing a thorough clean of the airstones. the pump i have says 2x200 litres. i run 2 6" ceramic stones per outlet. i would still like more air.
 
1982grower

1982grower

Well-Known Member
I've never checked temp. my roots always just grow like that. i imagine mid 70's. i use Dutch nutrient formula. Honestly i do very little to it. it just works. my ph is 6.3. Try it. its little money and i can assure you that you can do it. Also my roots are firm and have no slime feel at all. almost feel like horse tail hair.
 
You must log in or register to reply here.
Top