Keeping Nitrate Levels Down

[ewurm]

What percentage of water are you changing?

 

[Bderick67]

how often and how much water do you change in your 100gallon? If your tap water is a zero(prob 5ppm) and ya did a 75% W/C that will drop your nitrates down to around 20ppm. Then ya need to monitor daily and when it hits 40ppm do a 50% change to get back to 20ppm. once you get the rate of how quickly your nitrates rise, you can tailor your W/Cs and even work on getting the levels down to 10ppm.

 

[tonymofo]

I do a 15% to 20% every other day. I also check the nitrate level in the water that was coming out from the faucet and it is 0ppm.

 

[Bderick67]

I would do 50% W/c every other day until you get your nitrate levels down to 20ppm. Once you are there it will easier to pinpoint how much nitrates you tank is producing every day. Unless you are overfeeding you tank does not have that big of a bio load. I think it is also hard to tell the exact nitrate ppm when up around 80ppm with the API test kit.

It sounds like alot of W/Cs but I would be after 3 50%ers you'll be at 20ppm.