Okay, Alan
First, here's our BB 67g. We do 15% weekly water changes on it, as well as break down and clean the powerheads, and clean the foam in the prefiters in outgoing changewater:
This is the first pail of water siphoned out of the 67g. The detritus in this first pail is that which is easily reached along the back, sides and front of the tank by the siphon hose. As you can see, most of the detritus has settled in the bottom of the pail, while some remains in the water column:
On the left is new saltwater that will be going into the tank after the water change. On the right is the second pail of detritus siphoned from the 67g. This detritus has been turkey basted from under the rock structure toward the back of the tank for easy siphoning:
Powerheads and prefilters are removed from the tank using a plastic container so crud from the foams does not fall back into the tank:
Close up of the dirty foams:
Water in the container is from the first cleaning of the foams, with the partially cleaned foams below:
After cleaning the foams in three to five containers of changewater later, here's what the water and foams look like:
Close up of the clean foams:
The 67g, along with our other tanks, are all BB, have no sumps, refugs or skimmers and bioload is low. And still, we get loads of crud out of each tank EVERY FREAKING WEEK
