1 betta 7 Red neon blue eyed rainbows, and blue dream shrimps in a 15g Fluval Flex, planted (med density of crypts, swords, bulbitis, java fern, anubius nana, hygro, and hydro taiwaneese (sp?), and Seachem Flourite substrate, established for 7 months. Nothing is new in the tank for about 5-6 months except a floating betta log and magnetic glass cleaner about 3 months ago. Frank started to show some fin rot about 2 months ago. It was not to bad at that time but I cleaned my tanks sponge and did a water change to see if that would make a difference. His fins continued to slowly rot, so I decided to dial back his flow as I know the flex can be to strong for a betta (even tho I have the outtake nozzles pointed towards the glass to dissipate the flow) ordered a spray bar with a flow regulator off Etsy. At this point he is eating and still out and about in the tank. He looks kinda bloated (constipated not pineconing) so I cut back food and feed cyclops (frozen) and his temp is at 78. All this time I am checking his water parameters nitrates are never above 25, ammonia 0, nitrites 0, ph 7.2, we have pretty hard water from a local aquifer with no chlorine (although I still use water conditioner) his fins are still erroding and hes now hiding in the back corner, so I does the trio as per directions on the box. His fins are growing back quite quickly but now not eating and still hiding, so I let him rest for a few days and dose the ichX and Erythromycin a second time as I ran out of General cure after the first round (in Canada so cant get more). I up his temp to 80, hes still bloated even tho he does not seem to be eating. He finally ate some frozen brine shrimp yesterday and today but still hiding, fins are still growing back strong. Ive been watching to see if the rainbows have been picking at him but have not seen that. Im not sure what to do next. I would dose salt but theres plants and shrimp, and I dont have another tank to put him in. Any suggestions? Any help much appreciated. From Candice and Frank the betta