I'm about at my whit's end with a tank that I can't get anything to live in. Setup is as follows:
2 ATI #2 sponge filters
Eco Complete black substrate
RO water remineralized with Salty Shrimp GH/KH
I originally started this tank late last year. I can blame my failed start on insufficient knowledge and some questionable shrimp. Original setup was the same with an AquaClear 30, spider wood instead of Mopani and Cholla.
I cycled the tank in about 3 weeks and started with 20 orange rili shrimp. The were beautiful and active. However, I didn't know about necrosis at the time or I would have taken it up with the seller. They clear rili part of the shrimp was very white. They were all dead within a couple of days.
Not knowing what was left in the tank (and a bit of frustration) I reset it with bleach. Got rid of anything that could carry anything in the tank. The only thing remaining from the original tank was the Eco Complete, a piece of dragon stone and the tank. I let the tank cycle for about 3 months after all the bleach was cleared. Lots of bio-film and everything seemed to be doing well. Ordered 20 yellow neos. Looked great for a couple weeks. Had a berried female. Then everything started slowing down. The shrimp started acting lethargic. Started looking milky. Started dying. All gone a couple weeks later. I drained the tank again, refilled. Let it go through a mini-cycle. Watched all parameters and ordered more shrimp a month later. 10 more yellow neos. Again, looked great for a couple weeks. Berried females. Now here we are a couple weeks later and they are dying.
I usually let my parameters guide my water changes (Nitrate or TDS). Usually about 3 weeks between. 15% change. Lights are on from 9am to 4pm. Weekly dripped RO water for top-offs.
The shrimp in this tank have never shown interest in food. Seem to prefer bio-film before they get sick. I do provide a mulberry leaf.
Not sure what else I missed. I'm looking for any kind of guidance. And to brighten things up... my PFRs munching on a squash bloom (who don't live in the tank of death):