Originally Posted by ganiel
've tried to google this issue and the more I got confused. What are we supposed to be monitoring? I've read in other threads that if you're using API to test for Nitrates that you jave to divide your readings by 4.4 Before reading those threads, I used to do a 25% PWC
everytime I get a reading of 20 ppm
using my API Saltwater Master Test kit. Could somebody help me understan this? I have a 150 gal
tank and doing 25% PWC
everytime I got 20 ppm
reading is becoming so tiring.
I greatly appreciate your replies.
Firstly, if your doing 25% PWC
on 20ppm, it will only drop your levels to 15, that is if your tests are properly compared. Try testing before and after water change and compare colors, you may find its dropping but not enough for a complete color change. If you want to get it lower, its simple maths. 50% pwc
on 20ppm will leave your tank at 10ppm.
With nitrates, I too have had difficulty finding the rite info. As far as I can work out nitrates are the bad stuff, but a type of BB convert the nitrates into nitrogen gas (which is how it leaves the tank). The issue is that this type of BB is hard to grow as it doesn't like heavy water flow.
The API test kit gives you nitrate levels, which is what most people I know (especially on AA) use. Their is no /4.4.
This is all based on research not experience, as I don't own a reef yet, but hopefully someone can.back me.up.