Please advise !!!

[shorjai]

two weeks ago I sold all my fish in a 90gallon with FX6 filter running.... after the fish was sold, filter and heater stilll running for the past two weeks and WC weekly..

After two weeks without any fish I assume all the GOOD B.B. would die off since no ammonia to feed off good B.B.

Today I tested the water parameter with new purchase API test kit... all the water parameter looks perfect beside Nitrate is at 5.0PPM which I am going to do a 60% water change..

Base on the result am I safe to put new fish into the tank ? See screenshot

 

[shorjai]

Here is the result

 

[kno4te]

Go ahead and add away. Gotta recheck ur water to see how the bioload effects the water.

 

[Deadliestviper7]

I would assume you need a partial recycle, so just add a few at a time

 

[Ogertron3000]

Id do a big water change then add a few hardy fish first just to kick things off again. Test after a few days and see how it's affecting the levels.

 

[esoxlucius]

Is it just me or does that ph colour look like something not even remotely matching any of the test colours on the card.

 

[shorjai]

Is it just me or does that ph colour look like something not even remotely matching any of the test colours on the card.

Sorry it was a mistake on PH.. I accidentally dose the High PH and Low PH together... here is the result from this morning

 

[shorjai]

Today result

 

[esoxlucius]

Ok then. It looks like you are good to go. Although I will say this. Your BB colonies will be somewhat depleted after 2 weeks of being starved. You don't say what new fish you are adding but as a result of your BB being a bit threadbare i'd add your fish very gradually. Add them all at once and your BB colony won't be able to cope and your tank will crash.

 

[daryNV]

You can add fish and add bacteria in a bottle