Algae Scrubber Disaster

[MarkoD]

From what I've noticed is that skimmers are very sensitive to sudden changes in water conditions.

So when you turn off the scrubber, watch to see if the skimmer reacts. If nothing happens within a few min, I'd say its coincidence.

[Jaws]

I'll try and get some more pics but I can assure you the fish were in pristine condition. All of them well established for months and eating very well with no signs of being unhealthy whatsoever. And then within 5 minutes, watching them change color from massive stress almost as if their scales were burning, breathing rapidly, eyes bulging out of their heads almost and then all of them slowing down and starting to die right in front of your face. It was horrifying. Everything looked like it would have been dead within an hour if I didn't act fast. I'm convinced it's something being released into the water from the algae. I just can't imagine what it could be that would cause such a fast reaction.

[Aquattro]

So you've removed it, right??

[Jaws]

Until I can get some answers, yes.

[Proteus]

Just buy chance have u put a multi meter on your tank to check for stray current with pumps on and off

[monocus]

what size tank do you have and how many fish.my algae stays on my screen when i remove it for cleaning so i can't see what you would be knocking into your tank.even if you bent your screen around-water is always running down the screen and would be constantly adding anything bad into your tank

[tang daddy]

If it is infact your ATS, then perhaps you could in future have a bucket ready with the water that's returning back into your sump from your ATS go into the bucket for 1/2 a minute. What ever toxins that were released while removing the algae mesh would be caught on the return line in the bucket then also flushing the remaining water and remnants in the ATS and hose out.

Monocus was over when I cleaned my ATS mesh last week, because I run it in a 5g the whole bottom of the tank has algae and detritus settling from the low flow, I use my hand to scrape the bottom leaving loose bits behind, some of these bits make back into the sump and return to display when I turn my ATS back online. I've never had a problem losing fish although my return pump constantly runs, my ATS is fed from the chiller pump which is T'ed off and separate from the system.