It's a pitty that I don't have the testing samples. I could've done a test with the HydrX and the dye mixture to see what happens.


I think that the best way to prepare your loop for the dyes is to flush it and run a few days with pure water and than flush it again. Making the dye mixture with the Biocide in a glass of water to test it for a few days before putting it in your loop could be a good idea.