Brown Special Grade... help?

Tron_954

New member
my tank is reaching 15 months and as it remains successful in growth, color, life, etc.... im having one significant problem, brown algae, detritus, or diatom on the thick 1-2mm sandbed....

some quick notes...

radion at 60% (mostly 18-20k)
tunze skimmer
mp10
chemipure elite and phosban
nitrates around .2-.5
phosphates last tested at .06
i vacuum the gravel weekly on WC day....

had lots of hair algae and fuzz throughout the tank such as liverock and the return, due to shortage of CuC, a few snails did quick work of that...

let me know what other info may help in solving this puzzle.....


Untitled by J.L Photography, on Flickr

Untitled by J.L Photography, on Flickr

here you see how "dirty" the sand looks.....


Panorama Top Down View by J.L Photography, on Flickr
 
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