Thanks for the responses! Is it better to overhead water or tray water with full mineral mixes? With my 7 4ft sunblaster T5's High output the water evaporation will be a little higher. If I decide to do with 100% aquatic plant soil (APS) I was reading that an inch layer of LFS on the bottom is a good thing to help with moisture. Out of the other mineral mixes, can someone give me what ratio they used on some of the full mineral mixes out there? I am just trying to get it right the first time. There is a certain website that is selling a quart of full mineral soil for mexican butterworts (APS, Sand, iron oxide, orchid fertilizer). Its the same as Joseph is using right down to the fertilizer. Its not the $6.00 charge, its the $21.00 shipping for the 1 quart that won't make sense since I have to report a ton of them.
I'm using 1/3 APS, 1/3 perlite, 1/3 vermiculite + 1 spoon of worm casting / pot.
4 inches plastic pots.
Even with no LFS on the bottom of the pot, the core of the media always remain wet.
Water tray method, 1 cm of water. I'm thinking of raising the water level and following Joseph comment.
In winter, RH drop below 30% here so I put a plastic dome over the tray.