hey buddy well i have a 600 ltr planted aquirium with haliod lighting and co2 i found this to be a good key to limit algae
1.. seachem exel (thats a product ) and it slowly gets rid of black beard algae
2..limit lighting to 6-8 hours a day
3..a ph of 6.8
4.. a kh of 4-6
5..regular maintainace of canister filter
6..growing fast growing plants maby val..(this will help compete with algae)
7..the use of chemical filtraion (i use seachem phous gaurd)
8..regular water changes and vacume carfully.
9..try out some different fertilizers i use seachem flourish complete and i also use iron and potassium but i have also herd that sera has a great fertilizer as well .
10.feed fish in the morning be sure all food is consumed within 30secs to a min once a day and miss out feeding once or twice a week the fish will genarally clean the tank a bit for u.
11.. be sure tank is out of sunlight
12..if a drastic measure is needed then JBL agrol or is it algol should be used and monitior ur plants the use of oxygen may be required when using the product when algae dies it leeches oxygen from the water..
13.good luck man hope it goes well for you dont know if that was much help