My jungle val grows well, has crazy amount of runners but, plants only grow 4-6 inches and then lose their leaves. I find tips of jungle val floating every morning. I run my lights 6 hrs a day, i have finnex planted plus LED's. I don't know what could be causing this, I dose potassium every other day, but as of late haven't dosed in about 2 weeks. This has been happening since day 1. Tank has been running since beginning of november.