Just checked my tank and there were dark green spots on my leaves or possibly brown. I know plants need good subtrate but I really don't want to disturb the gravel until the cycle is complete. There was also holes on my plants ands should I leave them on it trim them off? I also hear that seachem flourish works but dosent work well for swords. The shop owner also used gravel and when I got them there, they looked quite healthy. Please tell me if I should use seachem flourish and what's happening to my plants?!