yea the biggest culprits are 1.) pests, 2.) salinity/alk swings 3.) bacterial infections. 4.) nutrient starvation. if you cancel out 3 then all thats left is bacterial. unfortunayely there is no test for bacteria. i dosed cipro every day for 3 days, then once every 2-3 days. i ran my UV once i started on the 3 day course, into the second week. i personally ran it 24/7, i really dont know if that was good or bad to do. i suppose it could have weekend the cipro, i really dont know.
after all that was done i dosed brightwell bacteria microbacter 7 to get good bacteria back in the system
i dont remember the strength 100% for sure, but i think i took the whole pill and dissolved it in like 150 or 250mls of rodi, then dosed like 5ml per gallon or something. ugh i wish i could remember. im sure there are recomendations of strength out there, i followed one i saw somewhere. but yea i dosed a little heavy handed the first few days.