Green stuff in my fish tank

Question
Hey there, just wondering if you can help me please, I have a 90 litre fish tank, has a water change roughly around every 3 weeks, ph levels are perfect.  Healthy and happy fish, the fish include guppies, bristle noses, glass fish, neons and scissors tails.  My problems is that my ornaments and any hoses that I have in there have this green stuff on them, its like little hair, really dark green in colour?  I was thinking that it algae?  To be honest I have no idea, the light is on for around 10 hours a day, they get feed once a day.  My brothers fish tank is 3 x the size and it never has any green stuff in it at all?  Can you tell me how to fix it please, or give me any suggestions at all cause I am sick of having to scrub my boat, rocks and hose lines clean. Oh and I have no idea how to fix it... many thanks in advance.. Mrs B


Answer
Hey dude,

Well it seems like it's a algae issue, roughly i'm not type of sure what type of algae. I have a forum its www.fishaquarium.org there is a posting in there about all different types of algae and ways to clear it up, it has pictures aswell, i suggest you go there and figure out what type of algae is in there. The algaes probably using up all the nutrients in your tank.. i'd highly suggest water changes every 3 weeks to get rid of excess nitrates in there. Water changes of 30% weekly, 3 weeks a little far apart and weekly would be much better to help algae problems. Lowering your lighting to 8 hours a day would probably help aswell. Start off with that and ask me anymore questions via the forum :) hope that helps