Total tank wipe out !!
I have been active in this hobby for over 40 years,but yesterday something catastrophic happened in my 34 gallon aquarium. I am just beside myself, and feeling totally responsible for the death of most of my fish. It started out normally,after soaking my purigen in a bleach solution overnight, rinsing really well & soaking in a bucket of clean water/ prime. Did the sniff test, all good, no bleach smell. Replaced the purigen back in the canister filter & got on with the rest of the day. Then after a few hours I noticed my dwarf rainbows kinda hanging at the surface. I thought that was odd,as I haven't increased the c02 for ages. I decided to shut it off, just to be safe. All my fish appeared normal at the end of day,so when lights went off after dinner I thought nothing more of it. Then this morning when I approached the tank, the gang usually greet me looking for their breakfast, imagine my horror when I saw nothing but dead floating fish ! I spotted a couple of Harlequin rasboras& my 2 panda garras, and my 4 year old oto were still alive, so I sprang into action & began a 75 % water change. Checked ammonia, PH, nitrite, all normal, what the hell ? Then I jumped on Google to see if I could find a reasonable explanation. After about an hour I found a link about recharging purigen, which I have done for years with no problem, however the other day I used a new bottle of bleach and much to my surprise, it was different! Apparently I purchased the "splash proof " bleach, which I just discovered, has surfactants in it !! Oh crap, too late. So note to self READ THE LABEL!!
It's been a few hour after large water change & put in a new activated carbon, so fingers crossed, hope my survivors are going to pull through.
Ps, I feel just awful about this.😥
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32.5 gallon Fluval Flex
15 gallon Fluval Flex X two & a healthy dose of OCD !