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I have a 4'x6' Canadian Ebb And Flow tray and was wondering what the best way to install flood and drain pieces is? I have already drilled the two holes using a 1.25" spade bit. The flood and drain pieces both fit well but there is just enough room between the pieces and the table in the hole...

Does anyone else have an issue with standing water left on the table? I have my pots on my table and when the table floods and drains there is some standing water left that cannot fully drain. How can I resolve this issue? I was considering lifting my pots off the table by about an 1/8th of an...

I have a couple seedlings that have sprouted and just won't shed their shell. It looks like they're wearing helmets. One of the two is super tall... Taller than any other seedling. Last night I worked the seed off him and he had two green leaves under there. The shell was on there loose. The...

My question regarding loose (granulated, floc) Rockwool is the preparation of the Rockwool prior to filling a pot with it. It comes compacted in a huge bag and I was wondering how big the clumps should be that I tear apart. Certainly thick enough to not fall through the holes in the bottom of...

I have a large carbon filter and was curious as to how other people suspended their filters from the ceiling. I was thinking about drilling a piece of plywood into a ceiling stud, putting hooks into the plywood, and hanging the filter with bungee cord from the hooks. Any suggestions?

Area to be covered by lighting is 5'x5'. Light is a 600w HPS. The debate in my mind is should I go with the Hydrofarm 4' light mover track or the IntelliDrive 6RPM light rail? The Hydrofarm track takes about 13 minutes to go down and back 4 feet. The light rail is much quicker and completes the...

I germinated some seeds in a paper towel and they all cracked. I then soaked 1x1x1 Rockwool cubes in 5.5 ph water for several hours after flushing under tap water for a couple minutes. I spun the cubes mostly dry in a salad spinner (down to 6 grams), put the cracked seeds in the cube (taproot...

I have two 600w HPS lamps with Cooltubes. I am going to run 6" ducting with an inline fan from the cold air side and blowing air across the socket/bulb and out the other side. The way my lights are positioned is that the lights are side by side so that a run of 4 feet ducting can connect the two...

I thought I had my head wrapped around this until, of course, I got to the point of flooding and draining my newly built system. I'm not sure at all how long the pump is supposed to pump the nute mix from my res onto my table and I'm not sure how long the water is supposed to take to drain from...

I have a table equaling 5 feet by 5 feet in area and 6 inches deep. I lined it with pond liner, drilled a hole each for the flooding piece and drain piece, and installed them both. I did a test run tonight and wanted to ask a few questions. It took about 15 minutes to fill the 5x5 area to about...

I have a table equaling 5 feet by 5 feet in area and 6 inches deep. I lined it with pond liner, drilled a hole each for the flooding piece and drain piece, and installed them both. I did a test run tonight and wanted to ask a few questions. It took about 15 minutes to fill the 5x5 area to about...

In an 11 foot wide room with a 9 foot light rail which motor should I go with? 6RPM or 10RPM? The 10RPM motor moves the light down the track and back in 4.5 minutes with an optional 0-60 second pause at each end. The 6RPM motor on the 9 foot rail moves the light down and back in 7.5 - 8.5...

Would 6" x 6" square pots be too small for a sea of green setup on a 5' x 5' tray using loose Rockwool in the pots and ebb and flow setup? I figured with 6x6 pots I could do 2 plants per square foot for about 50 plants on the entire table. Trimming the lower 1/3 of the plants and providing light...

I can't find any 5' x 5' flood trays on the market, so how would anyone suggest building one? Plywood and pond liner? If so, how could you ensure that no pools form and remain in the tray after draining?

How much light is required from a CFL to supply a single mother plant? How much wattage and whatever other specs are needed and how many bulbs per mother?

Anyone else feel like they got jipped on this fight? The reff called it pre-maturely I think. :roll:

I've seen EC and TDS meters that claim to read out in PPMs. So, what exactly are the differences?

Most hydro stores I've looked at online charge high prices for any grow tray. I am going to need 4 trays at about a size of 5' x 5'. Can anyone offer any ideas on inexpensive ways to make a tray or where to buy them cheap?

How does everyone have their fans setup as far as temp levels turning them on/off? I know it's wise to keep them running to promote fresh air moving in and stale air moving out but would it be ok to have the fans on a temp/humidity setting to come on when it gets too hot/humid and to turn them...

My flowering room will span about an 8' x 8' area. My original thought was to use a dual 600w setup. I would purchase a dual system that includes two 600w HPS lamp fixtures and one ballast that supports 1200w. These two lamps would be on a light mover to span the area back and forth. My first...