I've added 30 Caridina species during the last 3 weeks in my 120 liter planted community aquarium and I rarely see them. I've seen one shrimp corpse on the aquasoil and just found another near the canister filter intake (sponge). The shrimps that I do see seem active'ish (don't know if they are active or not), but they may be still a bit afraid of their tank mates. I have 2 honey gourami, 9 Celestial Pearl danios, 13 ember tetras and 4 otos with the shrimp. The honey gourami and ember tetra do not seem interested in the shrimp and the danios are too small to be an issue (even though they sometimes look at shrimp from very close, they never try and take a bite).
I'm trying to figure out why I've found dead shrimp in the tank. My water parameters (measured with JBL brand liquid tests) are as follows:
0 ammonia, 0 nitrites, varying nitrates but always under 20'ish. Temperature is at 24.5 celsius.
To be safe, measured copper which was at undetectable levels. Iron was at 0.15.
injected in the tank for the same time as lights are on (with 1,5h offset). CO2
was a bit high a week ago (lime-green/yellow'ish drop checker) but tuned it down (green drop checker).
From tap pH is 7.5, KH
1.5-2 and GH
Tank pH sways between 6.4-6.8 depending if CO2
is on or not.
Substrate is ADA aquasoil + I have driftwood.
The odd part is that for some reason KH
in the tank have risen up. KH
is 3 and GH
I dose according to the estimative index daily, using an auto dosing pump. It pumps a total of 10ml of Aqua Rebell Makro Basic EI in 3 smaller doses along the day. https://www.aquasabi.com/Aqua-Rebell...timative-Index
I also dose traces, for which I use Aqua Rebell Mikro Basic Eisen and dose a total of 2ml per day in two doses of 1ml. https://www.aquasabi.com/Aqua-Rebell...c-Eisen-500-ml
Together these add the following nutrients in the following amounts (daily):
I tried feeding the shrimp, but they were not interested. Like my otos, they prefer everything else that is found in the densely planted tank.
This is all I know - what I don't know is why I've found 2 shrimp bodies. How do the params etc. look? Could it be a failed molt (to be fair I don't really know what that would look like)? What else could it be if not that?