Nitrate filter Deltec NFP 509

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DRACO replied the topic: Nitrate filter Deltec NFP 509

firstly, the cost of the unit and the cost to operate it is not conducive for an ordinary fish keeper like me...
secondly, i am not sure what would be the end result when you do not have water change for a long
period of time unless, you top the tank with new water every now and then..

at my early fish keeping experiment, i had tried heavily planted filter remotely installed away from
the main tank... i was able to keep the fish alive after 17 months without water change... Marcus,
one of the OFL Mod before had ask me... "is the fish healthy?" according to Marcus, being alive is
different from being healthy.

the uestion is, "what would be the structure of the tank water after long period of time without
topping it or doing water change... is there enough minerals for the fish?
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Sosban Fach replied the topic: Nitrate filter Deltec NFP 509

DRACO wrote: firstly, the cost of the unit and the cost to operate it is not conducive for an ordinary fish keeper like me...
secondly, i am not sure what would be the end result when you do not have water change for a long
period of time unless, you top the tank with new water every now and then..

at my early fish keeping experiment, i had tried heavily planted filter remotely installed away from
the main tank... i was able to keep the fish alive after 17 months without water change... Marcus,
one of the OFL Mod before had ask me... "is the fish healthy?" according to Marcus, being alive is
different from being healthy.

the uestion is, "what would be the structure of the tank water after long period of time without
topping it or doing water change... is there enough minerals for the fish?



Draco, firstly I only keep two fish. So whilst I may spend a little more fish on the fish I have. I probably spend alot less than a number of people with multiple tanks on this site. As I said before I am in a failry unique position on this site given the exepctionally high nitrates from tap water that I have.

Answar yes my fish are healthy, yes they get enough minerals. Partly because I can now increase my tap water RO mix but more so because I use mineral additives as well.

This product actually means I can now afford to do larger water changes more often. This filter keeps the nitrates down to about 10ppm. This means when I do 50% water change I can add water at 10ppm nitrates without the nitrate levels increasing in the tank overall.

To get 10ppm nitrate water I mix my tap water 20-40ppm with my RO water (mix ratio depends on nitrates at the time). Say theres 20ppm coming out of the tap. This means I can mix 50-50 RO to tap water. To get the same volume of water with RO requires 2 thirds of waste water; thus effectivley cutting my waste water in half.

General update on this product,

Iv'e started using vodka. Vodka litre for litre is the same price as the deltec nitrate fluid.

However you need to dillute the vodka 1-3 with RO water. This effectivley cuts the cost by two thirds.

Additionally I have been running this product for quite some time now. I have added the doseing pump; which worked out quite well. The doseing pump mentioned is a europeon pump and requires an adapter. Fortunatly I managed to get one of these for free.

With this doseing pump I found the anerobic bacterial colony to be extremly stable. I have accidentally run the filter for over 24 hours. In which time it must have turned over atleast half the tank; however this is beyound the manufactures recomendations and I found very quickly that the filter was filling up with dead bacteria. I have now had to clean it out; hopefully I won't have lost to much anarobic bacteria in the process.

I know the initial cost is expensive, but it has actually saved me cost in the long run, whilst increasing the water changes and therefore improveing the quality of the water for my fish.
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Rocksor replied the topic: Nitrate filter Deltec NFP 509

Is the dead bacteria entering your aquarium?
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Sosban Fach replied the topic: Nitrate filter Deltec NFP 509

Yes the dead bacteria enters the aquarium. Even operating at normal parameters this happens. It happens with every filter.

This is completly normal and not harmful to the fish and does not adjust the chemical balance in the tank if the filter is operated correctly.

This is directly related to my previous comment in the original review on how the product works and why size selection is important and why it is important not to run the filter beyound its manufacturred operating capacity.

If the flow or feed is set to high for the filter you will get an increase in your bacterial colony, This means more dead bacteria will be produced. This can cause a cloudiness and build ups of white goo in the main tank.

Even when I accidentally ran the filter to fast I did not see any cloudiness. I only did that for 24 hours so I guess it didn't have time to build up.

I did find white goo in the tank, but this clumps together and is easily removed.

I have mentioned several times that this product is not a means to reduce or replace water changes. I have specifically pointed out that there is no requirement for this product unless you have exepctional high nitrates in you tap water. In which case you should invest in a RO filter first anyway.

I should point out the primary advantage of this product Is that fundementally means I can rely less on RO water.

Atleast once a year the tap water will go far beyound 40ppm. This product means I can deal with this problem each year more quickly, more effectivley and reduce my water bills overall.
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Goranothos replied the topic: Nitrate filter Deltec NFP 509

Thank you, Sosban Fach. I am seriously considering trying a filter such as the Deltec or, more likely, the Aquaripure. I have at least 10ppm Nitrates out of my tap water, and I do two 50% water changes a week in my 150 gallon tank. If a Deltec or an Aquaripure filter could help me maintain 20ppm or less Nitrates, I would be happy to invest, and continue to do my usual water change regimen.

“Everybody has a plan until they get punched in the face.” -Mike Tyson
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Sosban Fach replied the topic: Nitrate filter Deltec NFP 509

Haveing used it a bit. I now understand the process a little more.

If I knew what I know now. I would definatly try build one of these.

saltaquarium.about.com/od/diydenitratorplans/ss/sbscoildenitrat.htm

Same princple really. Only I can't see them useing vodka doseing, which makes me question whether i can stop the vodka doseing on mine after i have a decent bacterial colony.

Im sure if someone built a nitrate coil and added vodka doseing to get it going it would work well. Possibly more effective than the deltec filters.

Im probably going to build the coil part of one of these between my filter and the tank. That way i'll get the oxygen down before it gets into the filter, makeing it more efficent.
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Goranothos replied the topic: Nitrate filter Deltec NFP 509

Good link, thanks.

I just ordered an Aquaripure a couple of days ago and started a thread on it here.

www.oscarfishlover.com/forum/14-tanks-filtration-heating-etc/304158-aquaripure-denitrator

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Sosban Fach replied the topic: Nitrate filter Deltec NFP 509

That aquipure thing looks like it works exactly the same as the deltec. I don't know if aquipure sell a nitrate fluid; Ive found vodka works fine. Start with trying a mix ratio of 1:vodka to 3 parts RO water. Im looking to try 1:4 next week.

In terms of construction I would say the deltec is a more simple design, which would make it much easier to modify; but the aquirpure looks like it uses off the shelf compononts from water purifiers and things. So if you can find an alternative supplier it could be cheaper and you wouldn't have to muck about trying to fit square pegs into rounds holes. Personally I enjoy a bit of DIY.

Ive been looking at a mixture of spares from deltec and some bits from ebay. I figure I could double its capacity (effectivley turning it into a NFP512) for about £60. Might try it one day.

Ive just done a quick search for alternative parts. Im almost certain I could reverse engineer my NFP509 completly and produce an almost identical copy for cheaper.
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Rocksor replied the topic: Nitrate filter Deltec NFP 509

Sosban Fach wrote: Yes the dead bacteria enters the aquarium. Even operating at normal parameters this happens. It happens with every filter.


Read on another forum that in order to deal with this was to capture the dead bacteria using a filter that uses a micron filter cartridge.
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Goranothos replied the topic: Nitrate filter Deltec NFP 509

Rocksor wrote:

Sosban Fach wrote: Yes the dead bacteria enters the aquarium. Even operating at normal parameters this happens. It happens with every filter.


Read on another forum that in order to deal with this was to capture the dead bacteria using a filter that uses a micron filter cartridge.


So they used a micron filter on the output line?

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