Luckily I did not put this rock in any of my tanks. It had been soaking for a good while (not sure how long - but doesn't matter) - looked nice and clean. No algae etc.
Was soaking it for a few days in dark saltwater, still seemed fine - put it under lights and 2 days later I notice these....
Don't want these to make it into my tank - so - looks like an acid wash (citric acid / RO water) for a few days then a 2 or 3 week drying out period before I start using this rock. I could crush them - but there's too many and there is no way I'll get all of them.
Always check everything before it goes into your tank
Was soaking it for a few days in dark saltwater, still seemed fine - put it under lights and 2 days later I notice these....
Don't want these to make it into my tank - so - looks like an acid wash (citric acid / RO water) for a few days then a 2 or 3 week drying out period before I start using this rock. I could crush them - but there's too many and there is no way I'll get all of them.
Always check everything before it goes into your tank
