help with algae growth

ok so if anyone has any suggestion would be great , i baught a pre set up tank got a great deal on it but he had lots of green algae in it so i scrubbed and put in pitch black for weeks , got it all gone , well i started putting bufffer in tank well it shot up the ph and the alkalinity so long story short couldnt add anythig to keep up with algae growth cause it would die , well now all leves are ok , but hermits about 40 and 2 sally lightfoots one yellow tang cant get rid of it all any suggestions or, chemical suggestions other than taking alll the rock out and scrubbing again thank you so much
alex
 
you dont need buffer or any other addatives. The salt mix is more than enough for a basic reef.

What size tank is it? Also there arent instant fixes.
 
I got 3 astrea snails for my 12g and they have knocked out 35% of my algea in 4 days. They are beasts and get everywhere to clean up. Turbo snails are a beast though and since your tank is soo large, you can get a few large ones.
 
well last time i checked this wasnt an english class so thanks for all your help and im sorry i wasted your time by having you read my really long sentence i hope that god will help me with my algae and i might just go to an english teacher for the help with the algae since obviously you cant thanks merry christmas
 
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