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Hello everybody!! I am about to make a trip down to the fish stores to hopefully pick some crystals to replenish my first tank that i started(the 16litre). It is very stablized right now and houses the bloody marys and 2 surviving crystals. The bloody marys have acclimated to the parameters nicely since the majority of them are juvi shrimps that have been birthed in this caridina parameters. My question is, what are some of the things you guys look out for when picking out caridinas? I would appreciate some pointers as previously i was busy trying to get my parameters right and the basics of doing good water changes so i have not been buying new shrimps. But since now im ready to get some crystals, i realized i need more input on how you guys spot good shrimp quality. Things have been going great with the temps of both shrimp tanks, they range at 21 to 23°c. Tds is kept at 200 for the yellows and 180 for the crystal/bloody mary tank. Currently have got 2 berried yellow mamas, she must have hatched all of her babies wen i was in japan coz now i see two berried mamas and plenty of small friends swimming around. So very happy. I foresee culling in this tank soon, as it is only a 10litre and i did not expect the population to be increasing when i started this tank. Again, thank you to everyone here that helped so much in my learning process. The shrimps that i hatched artifically have grown to a considerable size as well after i came back, saw 2 in an adolescent size? I assume they are from that batch. Regards, Jo Sent from my SM-N950F using Tapatalk

Maybe something in your tap water changed? People with sensitive shrimp should not be trying to get their minerals from tap water. I would get a GH remineralizer and do 10% water change per day (RO only + GH) to get the TDS down. I dunno, could also be ammonia, nitrite, nitrate. (test, and use Prime to temporarily fix)

If you are allowed to pick the shrimps yourself, then pick all the females (since you already have a couple of males). Good solid colouring, check for genetic defects, active ... I can't think of any thing else. Bring your TDS meter with you to test their water parameters. If you have a pH pen bring that too. It's best to know what water the new shrimps come from so you can tailor acclimation to their water params.

Are you sure culling shrimps like this is the very last resort? You can't sell it ? Or sell it to a Local Fish Shop?

Ok, trying again...maybe too small this time. Ammonia now down to 4ppm.