Zero Nitrates, no water change,. This is aquarium 2021.

[markstrimaran]

This is the stuff you were using?

View attachment 1475720

If that is oats

 

[markstrimaran]

I removed the biochar from the top tank. Then a little cleaning of debris.

 

[eon aquatics]

that looks like a very complex setup

 

[markstrimaran]

that looks like a very complex setup

450 Gph in tank submersible pump into a filter floss basket, above the tank. Which gravity drains at full siphon into the pvc pipe. Which evenly distributed the water across the back of the tank to flush out the rocks.


Then the pump flow is split to a side flow tube at the front right corner. To push waste towards the pump.

 

[The Masked Shadow]

Impressive!

 

[Lepisosteus]

I did the same with a refugium, unfortunately it was to good that I had to dose nitrates to my system. Nitrates are a good thing to have in a reef

 

[Lepisosteus]

Later noticed this is a cichlid “reef”

 

[twentyleagues]

I did the same with a refugium, unfortunately it was to good that I had to dose nitrates to my system. Nitrates are a good thing to have in a reef

I found in my reef tank that if the nitrates got to low the corals weren't as happy or colorful. I found between 5-10 was perfect. Of course that was after trying to reach absolute 0 with multiple techniques.

 

[Lepisosteus]

I found in my reef tank that if the nitrates got to low the corals weren't as happy or colorful. I found between 5-10 was perfect. Of course that was after trying to reach absolute 0 with multiple techniques.

Agree. Mine were normally around 10. Wouldn’t even worry about 20. I had phosphates from 0.08 up to 0.62. Again never a worry. Sps were happy

 

[markstrimaran]

I found in my reef tank that if the nitrates got to low the corals weren't as happy or colorful. I found between 5-10 was perfect. Of course that was after trying to reach absolute 0 with multiple techniques.

On my freshwater system, Blue Green algea starts smothering my algea I am en encouraging to grow.