Can I have your "old" bio media? Seriously, my Substrat Pro is over 10 years old and looks as good as the day I bought it... I rinse it in tank water once or twice a year...
I would certainly keep an eye on ammonia and nitrite and perform water changes as needed based on these two levels, or daily if you don't feel like testing... In the future, only replace the fine pads that loose consistency, everything else can be rinsed and re-used, but never all at once as already mentioned.
Hope that helps
Sorry but, I trew the old media out like an idiot. I did 100% wc today. I'll test again tomorrow.
I am about 3-4 weeks in with using Metricide 14 to treat BBA. I use 20-25ml every night after the lights go out on my 75 gallon. Most of the BBA is gone with the remaining dying off. I just wish I would have found out about Metricide sooner. Will be interesting to follow this.
BBA has been gone in my tank for a couple months now. Metricide did the trick in conjunction with 30-40% water changes every two weeks. I also upgraded my co2 regulator and have a better needle valve now. I will say that some plants do not like Metricide and will melt if they come in direct contact with it. I also had some plants melt when I overdosed Metricide a couple times. Metricide seemed to work for some hair algae in another tank too.