Help! Figure 8 puffer pacing and not eating

[piffpuffer]

Cycling update
did a 20% WC the next day from the previous post

Amm - really seems to be 0 now!
Nitrite - 4
Nitrate - still high at 50 - 60
I'll continue WCs & monitoring,

Worried about the bacteria dying off while waiting for nitrite to go down though, since only two (now three) snails were put in and their bioload really is minimal.

 

[Lotsoffishandthings]

Nitrates are high considering they were 5ish on Thursday. I’m thinking the test kit is not reading properly. Are there any plants in the tank? They won’t make much of a dent in nitrates but the more biological material there is all the better for supporting the bacteria. Having the snails is producing some bioload so you should be able to maintain a population of bacteria.

I’d do a big big water change to get the nitrate down to 20ish and see what the nitrites looking like at that point. Don’t really wanna add fish while nitrite is still accumulating, should really be oxidised to nitrate as quickly as it’s produced.

 

[Lotsoffishandthings]

Also is this tank for the puffer, not sure I missed it earlier but would it be possible to transfer the filter from it’s current tank?