Hello....I have a 29gall planted tank with jungle and American valls.co2 system from fluval a and 2*24 T5 HO lights...when I got my vallisnerias I planted them separetaly...they went crazy...doubled the size and amount...I took them out and I made 3huge bunches...a few weeks later the leaves are turned yellow and breaking up...I took them out again and cleaned them...most of the vallisnerias middle leaves were missing...so I planted them again separately...any help?