My tank is just over 4 months old so I'm still just a baby and need some help!
I'm getting quite a lot of green algae spots on glass and on bed of tank (not hair algae) - this is despite a big clean up crew including a sea hare. ( see pics)
I do have my lights on for about 12 hours a day but I think it has started more since I started adding nori for sea hare - which is more likely?
I have been doing 10-20% water changes once a week
Parameters: pH 8.0, nitrites 0, ammonia 0 but nitrates 25 (eek!) - about to do another water change. My nitrates normally sit about 2- 5ppm. Again is this because I am over feeding??
All advice gratefully received - appreciate this is prob simple beginners stuff!