| I just washed out my oyster shell filter for the 1st time and I couldn't be happier. I hooked a hose up to my AV 150 air pump with a piece of pvc on the end to use as a probe/stir stick. I pulled the stand pipe so the water was going to waste and started stiring the oyster shell with the air probe. More than enough air. In fact, if I wasn't carefull I could blow water and oyster shell right out of the top of the filter. As you can see from the last picture the water turned pretty mucky. I just kept probing and stiring untill it started clearing up. I think I went through about 50 gal. doing this. After the water going to waste cleared up I just put my stand pipe back in and away it went. I am very pleased with the way this filter is working.
Now it will be interesting to see if I start getting a KH/GH rise with the rinsed oyster shell. |