Hope your tank is okay this morning.
My betta tank isn't, it spiked to 5 overnight again ! I cannot believe this, 7 days is a row now, 0 ammonia and the nitrates were 20 but tested today at around 30, between 20-40, so it is cycling, but this nitrite is killing me. So the gravel clean did slow the rise during the day, only rose to around 0.15 in 9 hours, but left overnight and POW, 5.......
It can't be the gravel as my minnow tank has the same gravel and they have never gone above 0.50 nitrite in 60 days......their tank was 0 ammonia and 0 nitrite yesterday, this morning there is a trace of ammonia, around 0.10, nitrite 0. So they are almost there I think. Though maybe not, their nitrate seems to sit at around 20-30, but then I do small changes daily with them, so that may be why.......
Okay, so today I have cleaned gravel again, and done 100% water change in betta tank, I removed all decor and fake plants so he just has the same gravel as before (same as minnows) and a starfish ornament (minnows also have same one), so they cannot be causing any spike. If it still shoots to 5 by tomorrow then I know its not being caused by any decor or plants. If it stays low then I will add back one item per day till I get a spike, if this happens then it could be an item........though I really don't think it will be as all this stuff has been in from the start, I am 3 weeks in and had the spike for that past week.....I might have to start a thread as I think I need some advice.
I hope your having better luck than me this morning Danny...............