Hello! I was wondering what your thoughts are on this LED lighting I purchased for my 55 Gallon. Would it be enough for a 75g low/medium tech planted tank? https://www.amazon.com/gp/product/B00OY7OQAA/ref=oh_aui_search_detailpage?ie=UTF8&th=1 I haven't had great plant growth so far, but I'm not sure if it's the lighting or nutrients that are the issue. I'm adding root tabs today, but I have been dosing Flourish Excel. The substrate we used is eco complete. Appreciate it!