Here we go I hope. It's potting mix (no added soil wetter), capped with fine laterite gravel (bought at lfs to weigh down soil/plants but a fine gravel would do just as well I think or I should be less slack and just hammer some driveway pebble laterite). I left some wool around the plants however that is pushing to the surface so been removing it each week - didn't work so well but on the plus side no plants have floated off.
The jars are just cheap cups. I saw some mesh jars for candles that might work better as the plant roots could grow down but I figure these cups should do for a bit. The cups are then hidden at back of tank behind fake caves/rock and driftwood. I was a little tight on space and could only find high, narrow cups.