Chemical

 

The following are  chemicals used.

 

Kent nitrate sponge

NPX Bio Pellets

Nitrate removal resin

NP Bio pellets all-in-one

Vodka

Equipment

 

The following equipment used.

 

Two Little Fishes 550 reactor

NP Bio pellets all-in-one

WACDNED Reactor

Techniques

 

The following are techniques used.

 

Liquid carbon dosing

Solid carbon dosing

Anorexic bacteria cultivation

On a personal level nitrate was the bane of my existence. Through a series of methods I was finally able to reduce our reef tanks nitrate levels to 0ppm. Here we will share with you our experiences and what in what worked in the end.

Kent nitrate sponge

 

Kent’s nitrate sponge was our first choice in attempting to reduce nitrate levels in our mixed reef thank. Kent’s directions state

 

“Use 1 cup for each 20 gallons of aquarium water. More can be used for greater effectiveness. Rinse with fresh water before use (preferably reverse osmosis or de-ionized water). Place in a large mesh bag (800 micron) or a canister filter, directly in water flow. Make sure water flows through the material and not just around it. To control ammonia in freshwater systems, granules can be replaced weekly. When used for controlling nitrates, replace only half of the granules every 3 to 6 months. 3.3 lbs (1 qt) treats 50 gallons and will reduce nitrates by about 20 ppm. Several weeks will be required to see an appreciable drop in nitrates. Test nitrates and ammonia regularly.”

 

Kent’s website offers very little information on what is in their product or how it works. We followed the direction and tried the product for six months. The product was used within a two little fishes 550 reactor. No sponge was used in the reactor because the size and weight of their product didn’t require it. We found that there was NO reduction in nitrates at all.

 

This evaluation was NOT CONDUCTED SCIENTIFICALLY, all results are antidotal and can only be verified by further testing. This experience with this Kent product may not be typical of your results

NPX Bio Pellets

 

Our initial experience with NPX Bio Pellets was with the Two Little Fishes 550 reactor so this review will cover both the NPX product and the 550 equipment.

 

When we first used the NPX pellets they had a round BB like appearance. Our last order of NPX bio pellets are shaped more like tiny hockey pucks. I mention this only because we have found that round shaped bio pellets are less apt to clump together. This is probably because the sharp corners of the hockey puck beads are more prone to hanging up on each other. We used a mag drive 1200 to drive water through two 550 reactors in series. The first reactor contained the NPX bio pellets and the second phosban. Clumping of both product is a problem in these reactors and requires frequent intervention to keep the media tumbling.

 

When we kept the media tumbling we found that both products help reduce the target element. The solid carbon dosing of the NPX bio pellets did in fact reduce the nitrates in the tank. The slime covered bio pellets would sluf off and get caught up in the skimmer. We noted both an increase in skim make production as well as a significant reduction in nitrates. As a result of this non scientific evaluation we can recommend solid carbon dosing and NPX bio pellets.

 

What we can not recommend is the two little fishes 550 reactor. Read our post on our experience with this equipment.

 

This evaluation was NOT CONDUCTED SCIENTIFICALLY, all results are antidotal and can only be verified by further testing. This experience with this Kent product may not be typical of your results