A couple of weeks ago I put some fresh root tabs in my tank during a water change. I had a large bunch of corkscrew vals, all the way to the top of my 55 gallon tank and throwing out runners like crazy. I had to keep trimming them back. Now, two weeks later, I am down to less than half the vals I had, and they are shedding leaves like crazy, just falling apart. If I move my hand through them, the plants just seem to disintegrate, but the leaves falling off are still green, not melting or turning yellow/brown. What's going on? Do vals not like root tabs? Or could it be from my switch from pressurized to DIY CO2 around the same time? The canister went empty unexpectedly (I.E. the cat was playing in the tubing and pulled it loose from the canister when no one was home, and it emptied itself out into the room!) and I'm using the DIY until I can get it refilled, getting close to the same amount of CO2 out of it though according to my drop checker. Or maybe something else is going on? It's 2.9 watts per gallon (I know, I know, outdated, but it works for me) of regular flourescent 6500K bulbs, DIY CO2, soil substrate with a sand/gravel mix cap. I've had the vals for years with no issue other than if they get planted right in the line of a powerhead, it blasts them to pieces. But they are in a fairly slow currented part of the tank now.