I've had this tank running for about 6 mo I recently rescaled it and now I'm getting what appears to be mold growing all over the place. I do run co2 injection and dose dry frets via pps-pro. My amonia is 0 trites 0 trates 10 I just ordered a phosphate test I'm running on t5ho dual fixture at 54 watts per. I have a bml fixture on the way just trying to figure out what this. Is