Rinsing sand using bleach

[Francis Kukulya]

Good morning
Can sand in your tank be rinsed with R/O water and a capful of bleach and then re rinsed in R/O water using a de chlorinator ? If cyano is present in the tank on the sand bed would this method be acceptable ?

 

[Randy Holmes-Farley Verified Community Expert]

I think you can do it, from a chemical perspective, but I am not sure if it is useful or necessary. Cyano will wash off pretty easily. You won't rid the tank of it this way as it is certainly elsewhere in the system and will come back when and where conditions are right.