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Ok you said your tent was 1.2x1.2 - Is that 1.2m? 4 x 15" clip fans?? I've never seen a 15" clip fan. I own a number of 6" clip fans. You could use 4, or just buy 1 16" wall mount fan. 29C is a bit warm. Try to keep it around 23-25C. 31% RH is decent. Could go up a bit, but not worth...

I am basicall about to try the same setup. I have a sentinel MDT-1 and the EVC-2 now. I am going to run a 3-way outlet splitter to the light timer on the MDT-1 and have a little CFL socket that will turn on when the HIDs are on and "trick" the photocell into thinking it's inside the grow. I...

Lucas formula in R/O (8ppm) water gave me a pH of 5.2. I let it swing all the way up to 6.3 before add-back which took it back to 5.2. Don't look at pH with a singular number or idea. pH should swing (within range) and indicates the rate at which the plant wants to feed. Also, adjusting nutrient...

No. You cannot not "flush" nutrient toxicities/deficiencies out of a plant with regards to what you're suggesting. FLUSHING usually refers to reducing/stopping nutrient feed at the end of flower, and is used in soil/coco/accumulative mediums. DWC is NOT an accumulative system. In this case...

Just start em in something like a peat pellet/rockwool cube/rapid rooter (my favorite) and put em straight in the hydroton. Just make sure you top water them daily until the roots hit water.

I built one of those systems a while back. They're simple and effective. That being said, I'm going back to DWC this next grow and I'm building an undercurrent, as it produces far better results from what I've seen.

Always wondered about using a cooler, with an icebox heat exchanger and a HP Aero setup. Nice design you've got there db!

Do NOT put the bottles outside the res. They will simply condensate, evaporate, and increase humidity. Put 2L frozen bottles INSIDE the res, and you will have to do it every day, perhaps multiple times. Also, a fan blowing over the res WILL cool the temps. HOWEVER, this is EVAPORATE COOLING...

If you're in straight hydroton/clay pebbles you can leave the drip running constantly. As Allybam said, with rockwool you'd want a different timed schedule. I'd say 4mins, twice a day. Once at lights on, once before lights out. I personally use a repeat cycle timer and do 2 mins every 6...

LUCAS FORMULA is designed for R/O water. And 250ppm tap is bad. Not drinking water bad, but IMHO it's garbage for hydro. Yes you can get by... but who here wants to just "get by" on their grows?

Pictures aren't that great an need to be rotated. My neck is sore now... I see some "cigarette rolling" in the leaves which looks like a heat issue. What are your temps at?

Sigh. I've placed multiple orders with the 'tude - All except the envelope I got today made it. It had the lovely green "DHS has raped your shit!" sticker... and ZERO beans. :( Contacting them about reshipment/refund. Keeping my fingers crossed... :evil:

Light tight the reservoir as well as the growing chamber. It's the same reasoning as covering the hydroton: prevent algae/gunk growing in your medium/res. A reflective surface below the plant also improves reflection of light back up to the plant. So yes, definitely cover the res at all...

I used to run similar buckets. I would DIY before paying for something that can be made very easily. I have pulled some 3ft tall plants in those, yielding ~6-8oz dry under a 400w LED, so you can definitely get good results. As far as pH/PPM I always recommend having a meter. I used to do Lucas...

Basically what Bacon and Superstoner have been saying. Lightproof the res. Hell, I'd recommend ducting insulation, the stick on kind. It'll help protect from too much heat transfer, boost light efficiency (not necessarily enough to matter) and light-proof the res. Maybe freeze a few 1L bottles...

At the rate you're going, it's going to be a while before you can clone. I take clones the size of that whole plant. I'm surprised the stem is so thin. What type of lighting are you using? Air temps? Water temps? PPMs?

Is that the same guys who make the Veg+Bloom? I ran their samples and it did pretty well.

I use 90w UFOs for small veg projects and mothers. You should do pretty decently. One thing I'd be careful about: With small volumes of water pH can fluctuate FAST causing lockouts and deficiencies.

Here's my thought: I'm going to "FLOOM" off my circulation pump in UC. (Sorta) Rather than just waterfalling back into the epicenter, I'm going to run a top manifold to each bucket with 1/2" PVC. I'm doing a 6 site DIY UC with 8gal EZ Stors/2" pipes. If I plumb the outlet from the mag drive...

Plants roots give off EXUDATES. These are originally designed to attract micro organisms to the root zone helping the plants uptake more food. This is not the same in hydro, but those exudates go into the solution, thus increasing ppm and lowering pH. Dump your solution and get ppm below 1000...