Observation-wise, it seems like the other algaes simply died off once cyano/spirulina became the dominant species in the tank uptaking nutrients. Is this what you have been observing Malira?
Is that part of the method Andre? To add lots of nutrients to have the cyano/spirulina become dominant in the tank and outcompete the other nuisance algaes/bacterias and then wipe out the Cyano/spirulina later in one fell swoop?
Sort of. There is mostly theory behind that since the bacteria strains and families, you can't really identify and observe and count ;-(
But that's ok, all big guys in the chemistry started with believes with limited evidence, so I do the same and read shitloads of material about bacteria, as well a lot about pathogenic ones ;-)...........
However,
Thoughts are basically and method that "mostly" worked with the Guys on MARSH (Many didn't tell they followed this method ;-) ........),
feeding the good bacteria strains (Biodigest in this case) with the required nutrients such as Nitrates/Phosphates/Nitrogen as well in certain cases carbs.
As soon the food is there, I let them inject the 2nd vaccination of Biodigest.
If then typically the nutrients are being fed and brought in for a while, a healthy diversity of bacteria seems to establish and pest algae, bacteria mostly start then to disappear.
So I do guess that Malira won't get rid "naturally" of these Cyanos within the next 2-3 weeks.
I wish his nitrates would be less consumed, seems there are some bacteria really taken the Throne and do not won't give it away, lol.
Those very likely are bacteria that are being used in waste water treatment and bacterial products, such as Dr.Tims and MB7 and some more. Vibrant is actually mostly a blended mix of specific bacteria, suppose to do a certain specific job ;-)
MALIRA,
do me a favor if you can.
Prepare two of these DIESEL/PSX coral frag containers. Fill up each one with 100ml tank water and add in one container 5ml Vinegar and in the other one 1ml Vodka. Close them up and drop them in the sump for 2 days.
Then let me know what you are observing after 2 days.
I guess we will find brownish bacteria flakes in the vinegar container...........
-Andre