Sulfur Reactor

Nitrates at 30 ppm isn't bad, certainly not enough to go to the trouble of a Sulfur De-Nitrator.
What's more important to consider is how are the coral and everything doing?
Also, what are the other parameters, especially the more important parameters of Alkalinity and Calcium?
Are you trying to improve the tank's general health?
If so, please post a pic so we can see what you are working with.
There are so many ways to improve aquarium health which have a side effect of reducing Nitrogen pollution.

Ok I am going to attempt to upload this pic..

Thanks for the pics. They are great and help a lot.

The problems I see are caused by too much pollution and not enough biofiltration. This can be remedied without adding the de-nitrator. A few more questions before making suggestions

What is the usual water change amount and frequency?
FYI, that maroon colored algae is Cyanobacteria and water changes add nutrients which grow algae.
What is the TDS of the purified water going into the tank as top-off and water changes?
How old is the RO Membrane?
When was the last time the DI Resin was changed?
How about tank feeding, like how much and how often of what foods?
Has the Copperband Butterflyfish eaten any of the Majano?
What is it eating?

Water changes feed algae.

"...dosing Mg to increase algae growth" is not a practice I would suggest. What kind of Mg product and what is the Mg level currently? 1200-1400ppm is an acceptable range.

Water changes of 10% monthly are much better for the health of the tank than the occasional large water change

I would definitely take the RO/DI water to a hobbyist or LFS for checking. It should be less than 5ppm TDS.

I would also stop feeding for a few days and then feed only half as much from then on. The Carpet Anemone does not need to be fed for a long time, which will significantly reduce the food input into the system. This food portioning will do two things. It will hopefully starve the Cyanobacteria and it will hopefully make the Copperband hungry enough to eat Majano.

I would also use the techniques discussed often here for killing Majano. Squirt them with lemon juice, vinegar, Joes Juice, Aiptasia X and more. Each tank is different so find the substance that works best in your tank.

The Scooter Blenny is eating the bugs which would eat the algae. I see a tank that may be starting to grow Hair Algae. Are there any spots of it showing up?

The sand bed seems to be pushed around. Why is that? If it is a sand throwing blenny or jawfish, there is another big reason for higher than expected N levels.


Edited by Mark Peterson - February 07 2012 at 7:54am