Hey I have a few tanks setup right now and want to do a low tech corydora 20 long next week. A few of my tanks are play sand, some are a mix of playsand and Super Naturals Tahitian Moon
sand which is a nice sand. Playsand varies in size, a chunk of it is larger grains then the Tahitian Moon stuff, but the TM feels alot softer. Two of my tanks have a mixture of the TM sand and Crystal River
which I find fills the tank nicely, but I dont want to use it for the cory's barbels
The tank will have pepper corys, albino, and kuhli loaches ( regular, and black ) and i'm looking for a substrate that fits their needs to digging around safely, and not too dark to make it hard to see the black kuhlis.
I read on here that playsand is actually a bad substrate for planted tanks because it compacts, but If I put root tabs near the plants will it be fine? I want to keep the tank looking natural and due to it being winter, its next to impossible to find white silica pool filter sand to use.
I'd prefer to keep my substrate one kind so it doesn't mix around during the learning process of moving plants if I have to, will playsand or more expensive aquarium sand be fine with liquid ferts and root tabs? I read about Seachem Flourite and alot of people seem to add an inch or so on the bottom then add 1-2" of sand on top would that work for me?