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What are good and cheaper alternatives to PowerSI - i have great results with the stuff but it is pricey

started feeding GH at 1/2 strength and plants are doing great - about 21days into the flip and everything looks like it would had I been feeding full strength. My question is Since I'm feeding 1/2strength my ppm is around 600-650, is that sufficient? Should I bump up to 850ppm. Usually I'm at...

if a water hose is used in line of plumbing and the packaging doesn't say lead free - will that eff me?

How would i go about finding out my ppm of each different feed cycle im feeding?

how many should flower in a 4x4 space? I'm in 3 gal pots and I can fit 16 but afraid when I flip to flower 16 would be too dense and 9 would be a more manageable canopy while being full. Do you think I will sacrifice over all yields if I do 9 instead of 16? Lots of topping and bending being done.

This chart is for the recirculating feed cycle - will post a breakdown of the drain to waste program also. Figured someone might find this helpful..

Day 56 and I see some beginning spots of PM. Was putting off buying a dehumid for another room since temps are getting hot and It screwed me. Went and got proper dehumid needs today. What do I do? I just put them into darkness for 48hr. Should I spray them with an h202 mix? Should I wash...

are they root aphids? Transplanted from coco to hydro - rdwc. If yes, how do I treat? With h202?

anyone have any educational sources for learning indepth about nute? Ie: availability a different time of the plants life, the way nutes effect each other, bioavailability of different types of nute.... that sort of thing?

About 40 days into flower and this little stem and bud started growing out the top of a main cola

What ppfd or par range is best wen supplementing co2 in flower - co2 stays between 1200-1500ppm

is there any company that is American made/sourced?

17x17x14 room 6500 watts of LED (roie-720) Sealed room running CO2. Estimates on BTU's needed?

In early flower should i run my lights at full strength(ROI-E720s) and raise them up to hit 900-1000 par or keep low and hit Par? what week in flower should lights at full strength and when/if would you phase them lower?

I have two rooms. Roughly 15x15x13. RH is sitting about 60-70 - RH is with the room full of plants* What are some recommended Dehumids that won't break the bank?

Anyone using Athena AG?

Looking for 5-13gal square buckets that are food safe. I've used the 5gal commanders from lowes but wanting a bigger bucket and idk if those are food grade...

Looking for dehumidifiers and co2 set up for 14 x 14 x 9 rooms. Setting up 3 different flower rooms all 14x14ft - Putting 9 Roi720s in each room. With roughly 300gal of RDWC in each room. I assume I will need to supplement Co2 with that amount of light in each room, yes? If so can someone...

This is my first cross, she throws tiny undeveloped seeds and not too many. terps are on point and trich production is decent. How can I stabilize?

Will these buckets cause bud to not pass testing?