Keeping a sterile res in dwc Shock Chlorine Advice

[zypheruk]

Well I'm running 2 dwc containers, both have clones from the same mother in them, 1 tub has just plain tap water and a little nutrient, the other tub has same tap water and nutrient levels and pool shock. Air pump feeding both tubs and airstones.
Both tubs have the same temps ie 24c. Water temp is way to warm, not even trying to control it. Will let them run for a couple a weeks and see what the results are.

In the mean time I will be making a start on a new dwc setup along with a new chiller, but that's for another thread.

Everyone has their own opinions, but lets not start ww3, others are doing just grand at it.

Cheers Lads

 

[rkymtnman]

others are doing just grand at it.

exactly!

did you ever find out what % yours is?

see if you can find a thread here by jijiandfarmgang about running a sterile res. she breaks down how to figure out ppms based on % calcium hypo. i think she only ran at 1ppm free chlorine but i think 2 to 3ppm is better at killing pythium/root rot.

i'm doing 2 GH waterfarms at the moment and the roots look gorgeous even with water temps at 85F (not sure what that is in C lol)

 

[zypheruk]

@rkymtnman never got the percent info, but I'm using it at 0.3grams per 20 litres and not seeing any ill effect from it. Will run it for a few weeks and see how it goes. Building a rdwc setup for my small cab atm, chiller and some other parts won't arrive till middle next week. Hopefully I can grow with out fear of the dreaded rot when complete.

 

[rkymtnman]

Hopefully I can grow with out fear of the dreaded rot when complete.

i kept on using pool shock even when i was doing rdwc with chiller. figured what the hell, better safe than sorry.

 

[CannaBruh]

I ran UC roots in all my reservoirs over the summer, never was able to do that without bleach. No chillers needed.

 

[aeg831]

Literally one second on google:

Calcium hypochlorite reacts with carbon dioxide to form calcium carbonate.

2Ca(ClO)2 + 2CO2 → 2CaCO3 + 2Cl2 + O2


Iron Precipitation 0.64 times Fe content
Manganese Precipitation 1.3 times Mn content

Hypochlorites raise pH, losing its effectiveness. Hypochlorites also produce CaCl2 or NaCl (salt) which may have an adverse effect on the quality of the water or solution. Hypochlorites are more sensitive to organic matter in the water and thus lose their germicidal powers faster.

It does almost nothing, esp in DWC. For cleaning drip emitters I can understand if you are using chlorinated gas like the pros but to dump in HTH is dumb. Esp since you have no idea what it is going to precipitate out of the solution.

Food for though if bleach is suppose to keep slime away then why does adding bleach not kill the slime once you have it? Hint: cause it's doing nothing.

Except that I did it on my last grow & it was hands-down the most successful & easiest grow in over a decade. The glowing-white root balls, plant health & yields were jaw-dropping. You can attempt to "pseudo-science away" the results of my experience. As for me, I am converted. I desire to convince no one, just sharing actual experience (vs. theories). Do the experiment. You'll be glad you did.

 

[rkymtnman]

Except that I did it on my last grow & it was hands-down the most successful & easiest grow in over a decade. The glowing-white root balls, plant health & yields were jaw-dropping. You can attempt to "pseudo-science away" the results of my experience. As for me, I am converted. I desire to convince no one, just sharing actual experience (vs. theories). Do the experiment. You'll be glad you did.

@Twerkle you still around, genius??? i've posted 3 other people that use chlorine for a sterile res.

 

[CannaBruh]

still use it in everything, cloners, veg, flower, although i have been trying to dial back near end of flower while playing with mammoth p

 

[Sour Wreck]

interesting thread, off to amazon to check out poolshock

 

[Sour Wreck]

ordered some shock, i get an occasional issue in my DWC. usually not fatal, but would like to just keep things clean.

anyone else ever use hydrogen peroxide in small doses? i have in the past with success

 

[rkymtnman]

anyone else ever use hydrogen peroxide in small doses? i have in the past with success

peroxide works but it's more of a nuclear option in my opinion.

i prefer chlorine in the pool shock. and a bonus is that it actually a tertiary nute that can be used by the plant.

you can use 1 to 5ppm of free chlorine which is safe fro humans and plants. i used 3ppm as a middle ground.

0.30 grams per 10 gallons water is 3ppm. you'll need an accurate scale for sure.

 

[Sour Wreck]

thanks, my tubs are gonna get a little dose next week when my pool shock arrives

 

[Sureshot2]

peroxide works but it's more of a nuclear option in my opinion.

i prefer chlorine in the pool shock. and a bonus is that it actually a tertiary nute that can be used by the plant.

you can use 1 to 5ppm of free chlorine which is safe fro humans and plants. i used 3ppm as a middle ground.

0.30 grams per 10 gallons water is 3ppm. you'll need an accurate scale for sure.

Thinking of testing this out on my next grow. How often are you adding the pool shock to the res?

 

[rkymtnman]

Thinking of testing this out on my next grow. How often are you adding the pool shock to the res?

once a week with a new res if you change res once/week. if you go 10 to 14 days, add it twice a week.

if you have root rot, up it to 5ppm and really flood everything from stem thru the medium to bottom of roots

 

[redi jedi]

Pool shock works great. Best used as preventative measures. H202 is better for treating if pythium has already taken hold. I forget the calculation but I add 1 gram to 90 gallons at 65% concentration...this is roughly 2 ppm

 

[Sour Wreck]

just put .15grams in 5 gallon veg reservoirs

 

[zypheruk]

@Sour Wreck mind and update with how things are working out or not.

 

[zypheruk]

Running my setup with a couple of small plants max 3 weeks old, res temp 18c 24/7 with the chiller, using canna vega, and pythoff. Bang rot root.
So just flung some shock in there 0.45grams into 65 litres of water along with the pythoff that was already in the mix.
Background EC from the tap is 0.3 total feed strength 0.5, so certainly no over feeding.
Lets see how things go over the next 7 days.

 

[Sour Wreck]

@Sour Wreck mind and update with how things are working out or not.

Will do...

 

[MrCharles]

peroxide works but it's more of a nuclear option in my opinion.

i prefer chlorine in the pool shock. and a bonus is that it actually a tertiary nute that can be used by the plant.

you can use 1 to 5ppm of free chlorine which is safe fro humans and plants. i used 3ppm as a middle ground.

0.30 grams per 10 gallons water is 3ppm. you'll need an accurate scale for sure.

Would be able to post a link to Amazon of the exact pool shock to buy? Looking to keep a large system "sterile" and need to be able to purchase year around. Thank you!