how important is a good substrate?
I've been trying to fix my algae and fertiliser issue and have decided to rescape the entire tank. Right now i have black silicia gravel as substrate. I wanted to know if its really worth it to replace that with Eco-Complete. Would my current gravel be sufficient? or is Eco Complete just that much better for rooted plants (like hair glass, or little chain swords etc). I know stem plants dont really need a good substrate.