Miss Wiggle
Practically perfect in every way
the lfs have made a common mis conception there. the bacteria do not live free swimming in our water, they cling onto surfaces and live primarily in the filter. changing out the water won't do anything to the bacteria, all it will do is reduce the nitrite and ammonia
if water changes aren't working then it stands to reason that something is producing some excess nitrite. have you cleaned out the gravel and tidied out any dead leaves etc?
also drop down feeding to every other day to slow the waste production.
we have a bit of a gripe over bacteria in a bottle products, unfortunately they're not very good. the idea of them is great and if they worked they'd revolutionise fishkeeping. However at best results are variable, unfortunately easy balance isn't one of the ones that's recommended.
There's two main problems with these products, firstly half of them contain the wrong species of bacteria in the first place which isn't v helpful! Secondly bacteria will not stay alive indefinately on the shelf in the lfs with no food source and in a range of conditions. So even the ones that did contain the right species in the first place they'll often die off in the bottle and there's nothing left by the time you put it in the tank.
There's two exceptions to this rule in the USA there's Bio Spira, in the UK there's Bactinettes. Both of these products will come refridgerated and with a shelf life, this sustains the bacteria's life for a bit longer.
So if you can get some Bactinettes from any of your local fish shops then try some of this, any other bacteria in a bottle products just dump the whole lot in on the chance that there's some bacteria still alive, but don't hang all your hopes on it.
you can do 50% water changes, leave it 1 hr and then do another 50% change so keep doing that until the levels are where you want and then start dosing with the protozoin
if water changes aren't working then it stands to reason that something is producing some excess nitrite. have you cleaned out the gravel and tidied out any dead leaves etc?
also drop down feeding to every other day to slow the waste production.
we have a bit of a gripe over bacteria in a bottle products, unfortunately they're not very good. the idea of them is great and if they worked they'd revolutionise fishkeeping. However at best results are variable, unfortunately easy balance isn't one of the ones that's recommended.

There's two exceptions to this rule in the USA there's Bio Spira, in the UK there's Bactinettes. Both of these products will come refridgerated and with a shelf life, this sustains the bacteria's life for a bit longer.
So if you can get some Bactinettes from any of your local fish shops then try some of this, any other bacteria in a bottle products just dump the whole lot in on the chance that there's some bacteria still alive, but don't hang all your hopes on it.
you can do 50% water changes, leave it 1 hr and then do another 50% change so keep doing that until the levels are where you want and then start dosing with the protozoin