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Ive been growing in hempys for about 10 years. I use GH 3 part. Super simple and readily available.

I"ve been growing Nirvana White Rhino for about 7 or 8 years now. Early in veg it is a little slow to recover from topping but once it does it comes on strong. I top 4-5 times before flower. I grow large plants, 4 per 1000w in 5gal Hempys and always have a stellar harvest. It's a tough plant...

I ran a stadium this way for years. 5x600w in the middle. With plants on racks with three shelves each, I got 48 plants in there. I eventually went to 14 trees in 5gal. buckets. It yielded rather well both ways but the trees were much less work. There used to be a guy here called NorthernFarmer...

I think 25 per room is going to be hard to get the timing right if you're limited to 75 plants. If you had 15 plants per cycle you could have 4 generations growing at a time as well as mothers.This keeps you under the limit and in time you should be able to get on an every three week harvest...

I would imagine it works as well as any other dish soap. I have found their spray cleaner works better than anything else to clean my Cooltubes. I foliar feed compost teas frequently and no other product cuts all the overspray so quickly. Less effort for the win! Fred

Still looking good. Might be time start thinking about supports. Bamboo stakes and twist ties work well and are available most anywhere. Fred

Looks very healthy. You may want to bump up the feed a bit, maybe 10 - 15%. The purple stems on the fans are an indication of P deficiency. It could also be a genetic trait, although that's somewhat rare. Doesn't look too serious yet.They get real hungry during initial stretch and still consume...

Doubt any bag soil will carry the plant through flowering with out some additives. Sometimes even Supersoil needs help. Marijuana is a very heavy feeder. You can use those cheap tubs of Peters from Walmart and get a decent plant. Just keep the nute strength to about 30 - 40% of what they...

The kelp meal and molasses should be plenty on Mg. Adding epsom salts will probably push it to the other side of the spectrum, lockout. Not good. Fred

I think you will be just fine. When I first started I ran 1x600w with a home made filter in my extra bedroom. No one ever knew a thing. My grow room now is 12x18 with a fan sitting on top of a 4' filter. There's no exhaust, it's a sealed room that I built in my garage. There is no smell when you...

In the last pics they still don't look close to ready. Only the trichs will tell. Be patient. I think the few bananas you saw were due to the 10-12 days of starvation / early flush, way high stress at a critical time. Most of the coloring looks like several different micro-nute deficiencies...

If you run co2 you wont have any exhaust or intake. Run a 6"fan on the filter and set in a corner and it will scrub the air just fine. Cap makes fairly inexpensive controllers, around $175. You get what you pay for though, I run a Sentinal, about $600 but it controls alot more than co2. Doubt a...

It would have to be a light tight tent. Haven't seen too many of those. Fred

As Ringsixty said, a well watered plant should be fine for 3 days. Anything less than that tells you maybe the pot is too small. It Could also be you're not completely saturating the media or you need more moisture holding material like peat or vermiculite in your mix if they are dry faster than...

I agree with Zem, good advice. As to costs, you would definitely need a large commercial dehummer for that space. A quick search suggests in the $5-7000 range. I think it would be cheaper to seal the rooms and generate co2, on start up costs anyway. Cooling costs would definitely be much higher...

Are you saying there's only 3 vent holes in the tent? If so you can't run two fan circuits. That leaves you pulling air through a filter into the cool tube and out. Use the lowest vent for passive intake, coolest air and slightly higher co2 content. I thought most tents had 4 vent holes so you...

Intermediate transfers are best. It encourages a tight well formed root ball. When small plants are put in a large pot the roots tend to run to the outside then down. They'll then start to circle the pot. You probably see this every time you buy a plant at Lowes or Home Depot. Nurserymen try to...

Another benefit of running at night is the meter reader wont see the meter dial spinning like crazy. He probably wont notice or say anything but how do you know his brother isn't a cop who told him what to be watching for? Better safe than sorry. Fred

1.6 gallon should be big enough to veg. If you can do it for 6 weeks depends on the strain and how big they are when they go in the pots. A fast growing Sativa dom will most certainly outgrow them in 4-5 weeks. For an Indica dom they should be just about right Fred

A 6" Vortex should serve your purposes. You would probably do well to get a speed controller too. It will be too fast, as in LOUD, for either light in the winter. Even in the hottest summer you may still be able to slow it down a bit. Any 6" fan will do the job but the Vortex is probably one of...