if there are toxins in your water, or anything that causes water turning color for treatment, then the chemicals are soaked in to your driftwood as well. Mine turned blue due to ick treatment, I boiled the hell out of it to kill any toxins absorbed. You really need to get one of those R/O filters for your tap water like I said before. I had a similar event, not quite as bad as you, lost one orino. I drained the tank completely, and refilled it with R/O water and the problem cleared up within 72 hours. And I didn't add a single thing for treatment. The more crap you add in there, the more stressed out there going to get. Just my opinion, but you cannot go wrong with the R/O tap water filtration system. It's about $45, and the filter pad inside if your tank is a 150 will only treat the refill once, then you'll need a replacement filter down the road for water changes, $18