I had to make some changes in the greenhouse this winter which gave me the opportunity to take a closer look at my grow beds. The grow beds had a high concentration of fish solids making it difficult to maintain clean water and a proper ph balance.
These tanks have been in operation for over 3 years so I guess that’s not bad considering how lax I have been cleaning the swirl filters, which removes 80% of the fish solids. Note the mud like substance in the photos as well as the algae buildup in certain areas of the grow bed.
The only real option I had was to remove the grow media and rinse it through strainers to remove as much of the solids as I could before returning it to the grow bed.
Hopefully I will never let it get that bad again, but I know my fish and plants appreciated the clean out.