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For a flood and drain system i would go with one of those you specified, hydroton, coco or rockwool, but none of them is available at walmart.

After looking at the pics i wasnt sure, but after reading all the post, It's not nute burns it is definitely a Calicium/Magnesium Deficiency. When you use RO water, you need to add some CalMag to your nutrient solution as well. Those are good choice; Botanicare CalMag+ SensiCal Mg You don't...

Don't worry about that, Even after i bought my RO-DI filter, water will rise upto 8 if i don't adjust it at least once a day. I try to reset it at 5.8 twice a day. A full water change helps alot if you have RO water, but after few days in the reservoir the ph will start to raise again. I don't...

Are you talking about the blue one? If so, i have one of those, they are nice but mine is sometimes unreliable. Maybe i got a bad one.

To be honest i have decent sized garden to take care of and i am a lazy ass.. lol but i do caliber my meters once a month to be accurate. I use not more than 500ml of solution every year. If it is possible for you to do so, i would link those 4 DWC bucket togheter using bulkheads and add a pump...

lol, was stone..

I've once worked with a strain that were pain in the a**. Always took 14 to 30 days to see roots.. So i decided not to use thise strain anymore. Be patient!

a small fan like that isnt going to move a lot of air, it's gonna do the job trough a carbon filter but how much cfm will be at the end? It might keep the smell of one or two small plants clean but i doubt that it's gonna be sufficient during flowering stage.

Exactly! You dont have to worry about that unless you are going to create a major heat signature, By major i mean commercial scale grow op.

Carbon filter works best when you suck the air trough it but still do the job when you push it trough. Maybe the filter/fan is not big enough for your room?

you might consider buying a qualitiy combo meter that stay in the reservoir. No need for storage solution, a simple calibration solution bottle will last a year.

Doe's anyone used the Advanced Nutrient SensiCal Mg Grow/Bloom product? My plants were showing calicium def, so i went out and bought this product. The sticker says to use 1.25-2.50ml/L. I started with 1ml/l on my reservoir and the ppm went up to 150, i am using pure RO-DI water wich comes...

450cfm is gonna be good to cool one 1000w light if you exhaust outside the grow room. Magnetic or Digital 1000w is 1000w and gonna cost the same amount of power. However that is true that they run a lot cooler and you don't ear zzzzzzzzz. I am not sure if the temps is going to stay under 80's...

Yes, the carbon filter is gonna take care of the smell..

A 1000w HPS runs very hot and need good ventilation(450+ CFM) exhausted outside the room otherwise an A/C will be requiered as well.

You don't need to exhaust the air outside the room, you can setup a carbon filter to recirculate and clean the air in the room.

If your're on a tight budget i would not opt for 2x 1000w on the 1st run as you'll have to compromise somewhere.. 2000w light and ballast will produce a HUGE amount of heat, i know as i am actually working with a 2000w system. You don't want to heat stress the plants even less burning em. With a...

You can use additive with base nutes no matter what the brand they are. The 3 part Flora from GH is a base nutrient, the PK13/14, BigBud and Hammer Head are additives or supplement.

8,000btu for 2400w of lightning in a 10x12 area is just not sufficient. My 10,000btu was constantly kicking in with just 2000w in a 10x10 room. It's gonna cool the area down for sure but the a/c will as well stay on most of the time wich will give you a nice bump on the hydro bill. For 2400w...

If i were you i would opt for a 1000w since they are cheaper than the 600's. But remember a 1000w produce a lot's of heat and you will most likely need a cooled hood with at leat 400cfm to keep it cool enough. a 250cfm won't be enough for cooltube alone with a 1000watter so far from enough to...