I have a 55 gallon shrimp tank with Red Cherry Sakuras and Fire Reds. Currently there are about 100 or so. I also have introduced 60 Crystal Reds to the tank.
The tank was set up (with the intent of it being mainly for Crystal Reds) back in August and was cycled using a fishless cycle. Plants were introduced immediately and have been rather well established for some time now. Plants include Taiwan moss, hygrophila polysperma, crypt wendtii, crypt retrospiralis, ranunculus, glosso, myrio green, and hornwort. My first red cherries were added a month ago once the nitrogen cycle was complete.
The tank specs are low-med lighting with a single 48" Finnex Fugeray. Substrate is ADA Aqua Soil. Filtration is an Aquaclear 70 w/prefilter and a large air driven Sponge Filter. 20-30% water changes weekly using remineralized RO/DI.
Water parameters are:
Nitrate less than 5 ppm
phosphates 0 ppm
I have had 1-2 dead (sub-adult to adult) red cherries in the tank each morning for the past few days. What confuses me is I have a bunch of little pinhead shrimplets in the tank, that likely came from berried females I purchased. So if the water is good enough for the new shrimplets, why are others dying? The Crystal reds (all juvenile-sub adults) are doing great.
My Red Cherries came from four difference sources, making sure I got different genetics in the tank. I do not know what the water parameters were from the tanks the cherries came from. The last group of cherries was added over 2 weeks ago.
When I set this tank up, my intent was to dial it in for Crystal Reds. With the water parameters listed above, does anyone see these conditions being unsuitable for red cherries? Could it be the softer acidic water that may be source of the issue?
I feel daily and sometimes every other day. I feed Azoo growth, azoo breed, hikari algae wafers, kens meat and algae wafer, and kens veggie pellets with calcium. I have not started feeding fresh veggies yet.
Here I thought if I had any issues it would be with the more sensitive Crystal Reds and not the Red Cherries.
I appreciate any suggestions or theories to what may be causing the Red Cherries to die. Thanks.