My system is about 15 years old. I began experimenting with Vibrant last November to treat Cyano. It completely wiped the Cyano out - - but really hit my macro algae too.
I bought Dr. Tim’s Refresh and his Waste-away too. I’m adding those about 1x per week and I use maybe 20% of the recommended dose. I don’t run my skimmer for 24 hours after dosing.
My chaeto and Ulva are starting to come back. I will keep adding Dr. Tim’s and the Vibrant in very small and spread out doses just to help with bio diversity.
Yes - the strains of bacteria really are different. Dr. Tim does do his research and the bugs are different and behave differently.
I have a deep sandbed in my Oceanic 135 Gal DT. That’s where the cyano was. It did return after about a month of weening my system off of Vibrant - - and before the chaeto and Ulva starting coming back. After reading Paul B’s post about putting lots of “nasty germ invested” things to build out the bacterial cocktail in our tanks, I switched to LRS frozen and then started grocery store hopping. The cyano pretty much (maybe coincidently) faded away. Bacteria competition? Mmmmmm, maybe - - or maybe not. I do use an Asian spider strainer on my sand now about every 3 months - - doing 25-33% of the sand each week for 3 weeks. Below is a pic of the tank as of right now.