My mini Glossos was planted 2 months ago and the old leaves are now turning dark green to almost black. I believe that it fully transitioned already because runners are present and growing. The leaves didn't turn color on the tip until 2 weeks ago. This is the 3rd month of my tank and diatoms are also on a lot of other plants and places. Any ideas? Would it be my nutrient deficiency? The new growth is very bright green. Another question. This plant was sold to me as mini glossostigma. They are growing quite tall to about 2-3 inches above gravel even with the whole stem planted 2 1/2 inches below gravel. Are they true mini glossos? If they are regular glossos, why are they getting so tall? I have a quad t5 ho fixture. To me that is 54 wats per bulb, multiplied by 4 and that equals 216 wats on a 50 gallon. 4 wats per gallon ratio though some say wat per gallon doesn't apply to t5's but I believe that my light is pretty strong, too strong if not. If my lights are too strong, why are the glossos getting so tall? Could it be another plant?