Nitrate product use problem/question
Iíve tried a number of things and Iím at my wits end in trying to reduce the nitrate level in my 55 gal tank saltwater tank. With weekly 10% water changes I maintain 20ppm which is no good for coral.
I have a wet/dry system which seems to reduce the nitrites and ammonia but not the nitrates.
I recently tried de-nitrate, stone like material which doesnít appear to do anything. Perhaps Iím not using it correctly. I initially submerged it in my wet/dry after the bio filter but believe it may need oxygen so I placed it in wet/dry . Still no luck. The water flow may be too high at 350gph.
Anyone have any luck with this type of filter material. The canister filters have same type of product, i.e Nitra-Zorb, etc. Can this material be recharged or do they need to be replaced, and if so how often? .
In using the aquaripure filter, do I need to remove the wet/dry which does appear to do good job on ammonia and nitrites?
Almost any saltwater aquarium with live rock will have enough nitrifying bacteria in the tank when an Aquaripure is used. The exception might be in extremely heavily stocked tanks.
The de-nitrate should NOT be placed in a high flow/ well oxygenated place and so you were using it wrong. However, it is not as efficient as the Aquaripure and will need to be replaced every 3-6 months as the pores become clogged. Each time it is replaced the anaerobic bacteria has to build up before becoming effective again.
Nitra-Zorb is designed to remove ammonia. Itís name is a little misleading. It is only useful in brand new uncycled tanks. Otherwise it will mostly function as just any other biomedia such as what is in your wet/dry.
Direct vodka dosing requires a very powerful skimmer. It can be tricky and dangerous to figure out the correct dosing routine for your tank.
The Aquaripure is safer as all the nutrient stays inside the filter. Also, it needs no skimmer and can actually replace a skimmer in most tanks. A skimmer can be used with the Aquaripure though.
I would recommend you use the Aquaripure and gradually remove all the biomedia from your wet/dry. In its place you can add more physical filtration such as polyester fiber, pads, and sponges. Whatever you use you want to make sure you replace it or rinse it in tap water every 2-4 weeks.
The Aquaripure will contain aerobic nitrifying bacteria as well as the anaerobic denitrifying bacteria. I also do not recommend using UV sterilizers with the Aquaripure.
Wet/dry not for coral
Thanks for explaining the wet/dry and providing the vodka dosing artical. Finally some sound advice. Yes I bought it about 20yrs ago and just started to do coral , hence my issues. I was under the impression it was the only bio-media I required.
I read up on the vodka dosing. Its hard to believe that all that is required is vodka and a really good skimmer. No other bio-media/filter required? No refugium ? A refugium is another option I now realize that I could go with. One question, how often does one add the maintenance does? Seems like its daily whether there is a trace or not of NO3.
So I believe the acquaripure sounds like the simplest approach considering my skimmer is as old as my wet/dry and the prize of the new ones are the prize of your filters.
One other question on the acquaripure - can a refugium help or is it simply not needed? Thinking I might start one and if its not enough go with the acquaripure filer.
Again, the difference between vodka dosing and the Aquaripure is you do not need a skimmer with the Aquaripure and also all of the nutrient stays contained within the Aquaripure.
I experimented with vodka dosing a long time ago and I remember it killed all my snails. I believe the Aquaripure is a safer and more controlled option.
Finally! 0 Nitrates at last
Thought I post my success story results. With the great advice I got from this site I was able to reduce my nitrates from 20ppm to 0. Took about 2.5 weeks. I converted half of my wet/dry into a refugium.
Was surprised this worked since the refugium is less than 1 ft square in size.
I added 1 gal refugium mud, 8oz of fiji mud and 1/2 gal of caribSea arag-alive aragonite reef sand. Also placed a 10w grow light on refugium.
Then I add two small live rocks with pretty good macro algae growth on their surface. Let this set 2 wks then added 24oz of macro algae . Believe this was the kicker. In a few days had 0 nitrates.
Finally added some coral and after a week its still alive.
Again , thanks for all the advice. Next up , LED lighting.
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