Local grow shop sells them in several sizes. They fit perfect in a saucer.
I cannot find these smaller than 13" anywhere.
I tried that and ended up with a giant mass of roots in the rocks. Had pH issues. Wasnt able to get all the excess run off out. This was my feeble attempt with rocks. Your results may vary.
Using three of those in a 2×4 with 3 gal fabric pots right now. They are perfect for my little set up in there.
I'm running 1.5gallon pots! The bottoms are MAYBE 7" lol those will take up too much room preventing me from running 10 or more. Im just gonna get the 10" elevator/saucer combos if I cant figure out what to put under em once they arrive. Im gonna try a few things first lolGro Pro Nx Level Pot Elevator 13 inch Growing Raising Hydroponics | eBay
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With big saucers. Mine are 18" and about 3' deep. I holds my desired run off fine watering a 5gal pot. Then I transfer it over to another. I leave them raised on the lifter always. Better circulation. Less chance of root rot forming in the bottom center of the pot.
Then you just go with the appropriate size for your pot bro. I would shop around tho. You can get them for peanuts at some places. Was just giving you the info on what I used.
Imagination and a 3/8 inch drill bit can do wonders...try to avoid anything porous ie wood...great places for nasties to grow.
