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Just a thread where I can share photos of my CRS tank and shrimp. I got the original CRS in November ‘18 and they have been breeding fairly consistently since. Sorry the photos aren’t great. They’re all taken on an iPhone 6. Please share your thoughts ? Thanks

No problem. Love helping others if I can. Report back in a week or so. You should test TDS every day around the same time, to keep a track of any changes.

Whatever it was to have killed all the shrimp in a couple of days is pretty nasty. I wouldn't risk reusing water or plants. Heater should be okay after a good clean and disinfection. I would also rip the old tank down and start again. New filter media, new substrate. Everything else scrubbed in white vinegar and rinsed off, then let dry for a few days. I doubt the pH could have killed everything so quickly, especially if the pH crept up slowly over many months. It might have been something poisonous to wipe out a colony so fast. Any aerosols used around the house lately, insect repellents?

Sounds good Jay. Thanks a lot I appreciate all of you

When I fed my shrimps on saturday I counted 80 and yesterday all appeared well also. This morning all I can see is dead bodies with a reddish colour shell to the head area.............. I assume it is rust but am not certain, only going by what I have read here. From what I have read here it could be because the substrate was exhausted and the PH had risen to 7.5 last time I checked (though that was slowly over time)? I doubt there is much I can do at this stage, but I will set up the old 15L to put any ALIVE healthy looking shrimp in IF THERE ARE ANY! and close down the big tank and start again. I guess I know next time that when the PH indicates that the substrate isn't working properly to act quicker???? When does the learning finish! My main queries at this stage are: 1) Is it safe to put stuff from this tank with the dead shrimps into the small tank where I will put any healthy shrimps (If there are any alive that is) or will that be a bad idea, I am thinking, water, heater, maybe a plant or 2 etc. 2) How do I make the bad tank good now so that it won't be contaminated for the restart? Tank, filter, heater, plants, decorations etc. I will use new substrate. Simon