First time Hydro. Not first time all together. There are four girls about a week old. All girls have their Cotyledon leaves. Two have their first set of leaves, but tiny - those two have tiny 1/4" taproot sticking out of the cubes. (they were in dome/tray with heat mat so far.) Today just moved to small black container with 4" net pots. That has some air stones in there. (that will be their final net pot size 4".) I'm not using any pellets or anything, just net pot > rockwool > plastic opaque disc to cover light from roots. (will be replaced with neoprene's once the girls are a little taller and poke their head out of the net pot, maybe 1" more height.) [Room] 78.8F (26C) Air Temp (Ranges around 76-79F, but normally stays at 78.8.) ~15 RH In room (A little low.... should I implement a Humidifier?) ....under dome they were 90%RH initially, then 50% RH... now no dome, just in the net pots. [Bucket] 64.4F (18C) Water Temp. 5.8PH. Water level is about 1" below the net pot. Where if I put my fist against the bottom of the net pot, after about 15 seconds my fingers feel slightly misted... but not really wet. [Two Questions] 1) Should I be worried about the neoprene insert squishing or pinching the seedlings stem? Where it may cause the seedling to die? As the girl grows, will the stem automatically adjust in the neoprene or do I need to widen the hole in the middle as it grows? 2) Do the conditions above sound adequate for a seedling?