Is it safe to lower nitrate from 80+ to <10 in a day?

[newfly]

I'm having a a series of screw-up in the past couple of months. First is the mixed up dosing tube, causing extensive dosing of Nitrate+Phosphase over several months. Caused my tank crashed and maybe 50% coral survived.
Now i realized my Avast Plank setup is messed up and triggering 48x 10s feeding a day. I don't know how it get messed up. I thought i set up for 3 feeding.

Anyhow, my stylo is unhappy and started losing some flesh. Series of water test shows Nitrate is up the roof ( caused by the feeder).

I am in the process of making 40-50 water change. Probably can do twice today. My questions is it is OK to lower the nitrate in such big jump?

Other parameters is close to new saltwater, so i should be fine.

 

[H2OPlayar]

Yes, it is fine to reduce the nitrate this fast, especially with how much is in your water. The water change is the normalization, after the swing of too much food.

 

[tribbitt]

I think it's fine to do those water changes. Dropping nitrate only is bad if you drop it to 0 on accident, for example with carbon dosing, but that's unlikely with your method of WC.

Good luck, you'll bounce back from equipment failure and the dosing mishap.

 

[newfly]

OK. Did 2x 50% WC. I guess i have to just wait and see. I didn't check Nitrate after WC, but based on my calculation, it should be ~20. I'll do the test tomorrow