dave.m
Active member
When the water goes punky I suggest you start right at your RO/DI unit to see if any filters need changing. Do this check right the way through all your filter units. Too much of something in the water may not be enough to affect auxiliary tanks but may be enough to set off your display tank. Vacuum any substrate. Blow all your rockwork clear of settled detritus, especially underneath it. Cleaning out the sump is also a good idea.
Dave.M
Dave.M