- Joined
- Jun 17, 2020
- Messages
- 142
- Reaction score
- 71
It can make a difference and calibrated with RO if often not accurate. Every 5 mins can cause shock and I recommend clean pail/bucket and emptying contents into the container and adding a cup of water every 15 min s 6-8 times. it gradually equalizes salt/oxygen/Ph and gradual is key for the new occupants prior to entering new tank
Yeah I bought some 35ppt calibration fluid and the refractometer was accurate. The bleach had no additives either.Check the bleach for any additives, I picked up what looked like normal clorox bleach only to notice it was scented.
His death could totally be unrelated to the water change. Sometimes fish have internal parasites or such or other issues we can't see.
I also bought some ammonium chloride to dose the tank to make sure something wasn't up with the cycle. Since there's only corals in there right now I dosed it up to 4ppm and it's been less than 24 hours and the ammonia is down to ~0.8ppm so the biological filtration seems fine. Nitrates and nitrites both read 0. (All of these are using Red sea test kit)
The filters smelled a bit of bleach in some spots but when I tested for chlorine it came back negative. I'm not sure how much would be necessary to kill fish though.
I don't think the acclimation process I used cause this. The first fish was acclimated like 3x using this method and lived for 7 months and the newest fish was eating and swimming around with the bigger fish for 3 weeks. It also seems odd that they'd both die at the exact same time if it was an infection or acclimation issue or something like that. They weren't added together.
Gonna do an ICP to see if there's any contaminants in the water. Other than that I think I'm gonna keep the tank going for awhile and see what happens from here before getting more fish.