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momome888
04/19/2006, 01:37 PM
i have a plenum filter in a small 100 g reef tank for some time now the anaerobic sand just above the plenum is now totally disolved so should i remove the aerobic sand with all my critters away move away the grid and add more sand then add the grid back on and add back the aerobic sand or what other ways should i solve my problem

momome888
04/19/2006, 01:41 PM
xxxxxxxxxx -my aerobic sand
000000000 -grid
aaaaaaaaa -anaerobic sand (depleted)
wwwwwww -filer floss
ppppppppp -grid
&&&&&&&& -water
&&&&&&&&