Nitrates too high

[Mburns11]

I have been battling high nitrates for a week, have done 3 25g water changes on a 75g tank, I’ve even dosed Seachems to bind the nitrates. Getting ready to do another water change.
It worries me that I do not know how this is happening. I had always been a heavy feeder but my water has been in check, Nitrates=<25. Nothing has died, I have now switched to pellet food instead of frozen until the nitrates get down.
The only thing I changed in my routine is adding Red Sea AB+ to the tank for my corals. The fish look fine, the acran is no small again & I somehow cannot grow monti ever.
What am I overlooking? Ph 8, Alk 8, Mag 1200-1300, Cal 410-440, Nitrates 100 all the time!

 

[Flux Capacitor]

What test are you using? I’m sure the AB+ is adding a little to your problem, how much are you dosing, and how often?

 

[Mburns11]

What test are you using? I’m sure the AB+ is adding a little to your problem, how much are you dosing, and how often?

I use Salifert tests. I dose 10ml twice a week.

 

[Mburns11]

I didn’t think the AB+ would mess with the nitrate level from what I read. Normally the tank runs along fine and I dose mag, alk, cal, probably once per week.

 

[adromero]

I use the Red Sea A and B not the new AB+. It did raise my phosphates but not nitrates. I have been using it for a year and saw great growth. I dose about 7 ml of each to a 34 gallon.

 

[Mburns11]

I use the Red Sea A and B not the new AB+. It did raise my phosphates but not nitrates. I have been using it for a year and saw great growth. I dose about 7 ml of each to a 34 gallon.

Thanks. How often do you dose, how many times per week?

 

[adromero]

I use the Red Sea A and B not the new AB+. It did raise my phosphates but not nitrates. I have been using it for a year and saw great growth. I dose about 7 ml of each to a 34 gallon.

Thanks. How often do you dose, how many times per week?

i dose everyday I follow the Red Sea recipe I found on their website. I also run chemi-pure which I think helps.