Brown Algae on White Dolomite?

stubbbs

Member
what if any way is the best way to keep the brown algae from growing all over the dolomite...it doesnt look good. I have a 125g and run the lights about 8-10 hrs per day. I'm not sure if I this is normal algae growth or too much. I do have about 20 small N. Snail and 20 blue legged h. crabs should I buy more snails. amonia, nitrites, nitrates all 0 and ph about 8.2-8.4, Ca is about 420 and mg about 1400. Also should I frequently remove a certain percentage of the gravel and clean?? Any advice would be appreciated.
Thanks
 
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