[jl209]

Im in the process of treating my tank for BGA with erythromycin. Alot of my BGA is under my pool filter sand substrate. Im just wondering if I need to inject the meds into the sand or if the meds will get into my substrate.

 

[freph]

It should penetrate the sand since water also flows through your sand as well. If you're not feeling assured, you can fill a syringe (1-2mL/gallon) with hydrogen peroxide and apply it directly to the BGA. The fun thing about peroxide is that it makes stuff float.

 

[jl209]

Ahhh good idea thanks freph.