When I use kitty litter I mix it 25% litter and 75% soil-if I use peat- I only use a hand full at most dusted on the bottom under the soil
Kitty litter can be a mess when used 100%-you also need to make sure it is just clay and not any of the perfumed type or with any additives or it will kill the fish-the wal-mart red bag brand is what I used-how it is made from one state to another can vary too so look at what is in it
Personally I would stick to dirt or potting soil and only add a handful of the clay kitty litter for the iron.
Great.....make sure and look at the bottom of the boxes for the recycle number you want "2"-this is human grade and food and water safe...3, 6, 7-are not safe due to possible leaching of toxin in the water.
Look forward to hearing about your new project......
Yepi get i let them in and there fine luckily. I dont have atest kit never have but i guess i could take it to a store . OH also today i found these large polystyrene boxes about 2 foot long and i was thinking i might plant it heavily and use it for my next breeding project and see how the fry grow up in a natural enviroment type tank.