Time for an update. Overall, the experiment to keep a mixed reef nano with a nano is succeeding although the set backs have been numerous and tenacious. The idea on the 29 gal Aqueon was to add a second sump (DIY 10gal) to put the equipment, add a skimming over flow with filter socks and a rubble rock/macro algae basket. Also an ATO for kalk. Thus leaving the 5 gal CPR HOB for macro algae (cheato & culpera) for pod productions.
The mandarin is healthy. Feeding: I alternate a cube f frozen brine and mysis along with a piece of LRS reef frenzy nano. What I believe is key for the mandarin is the addition of ROE . I keep the pumps off for 10 minute (apex classic) and then once the power heads come back on, another 10 minutes for the sumps to power back up. This give the mandarin time to start working on the ROE eggs and then the corals to capture what the fish miss. They love the ROE and LRS - more on that.
IMO, pushing the tank to its limits, and lack of algae pickers like tangs (life with a nano) and after my tank crash (started with an electric short that melted a BTA) , The tank was overrun by GHA, Cyano and Dinos. Lots and lots of rock scrubbing, water changes and lots coral from all the disturbances, and in the end, H2O2 dosing was the winner. Some sps, the zoas, and the duncan stressed, but they bounce back.
Back to feeding. I am very happy I have a few sps that doing well/ bouncing back to confirm sps feeding is ok with sps. I will feed some reef frenzy from time to time. But it's the LPS that have really taken off with the LRS and ROE. I think the routine with the pumps as described above is a winner for me ensuring distribution of coral food throughout the tank followed by removal of excess vua the filter socks.
I stopped dosing H2O2 today to give the affected corals a break. Hopefully I won't see the return of the nuisances.