How fast do discus grow?

[Mattefect]

WAit so I buy a 40g tank for my discus to grow?

 

[JustinKScott]

I'm suggesting you get then into a barebottom tank until they grow to the size you want.. Then put them back in your planted tank. You could use your current tank, but you'd sell your other fish & probably kill your plants (85F + 50%daily water change).