i think co2 reduces algae because it increases plant growth thus outcompeting algae. The exception is BBA which seems to melt from co2 injections (need + excel == goodtimes)
Excel shouldn't be melting annnnnnny plants imo.
When you first start dosing it a plant might 'ripple' like it was irritated but they get used to it very fast.
If you have more questions about Excel i'd recommend posting on a the SeaChem forum at plantgeeks.com -- They are sponsored by SeaChem and trained people answer questiosn on that forum all day long.
Excel shouldn't be melting annnnnnny plants imo.
When you first start dosing it a plant might 'ripple' like it was irritated but they get used to it very fast.
If you have more questions about Excel i'd recommend posting on a the SeaChem forum at plantgeeks.com -- They are sponsored by SeaChem and trained people answer questiosn on that forum all day long.