"Mike C" wrote:

I empty the water, remove fish and plants, and basically remove all
debris. I use a broom on the bottom and sides. I don't remove every
last trace of algae massively scrubbing it.

I don't have a bottom drain. I don't have stones (other than the ones
the Koi knock out of my plant pots).

Sounds like a lot of work! I usually just vacuum up the mulm from the
bottom, although I can see I may need to do a more thorough cleaning next
year. I think you could easily get by with only doing what you do every few
years.


San Diego Joe
4,000 - 5,000 Gallons.
Koi, Goldfish, and RES named Colombo.