DIY Nitrate Filter - Page 6 - Tropical Fish Keeping - Aquarium fish care and resources
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post #51 of 127 Old 03-05-2012, 10:32 AM
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Well, so far the buffering substrate I have added to my 55g (That I want to mix with the denitrifying biomedia) is working (albeit slowly). Have you had any positive showing from your filter? Im itching to start on mine

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post #52 of 127 Old 03-05-2012, 02:54 PM Thread Starter
Unfortunately I have no miracle to report. I did a partial water change of 20g on Friday with some city water. Sadly the city water was 10-20ppm so it had little, if any, nitrate reduction on my tank.

I just tested the effluent and it is a good 40ppm, so I guess the filter is going to need more time to mature and we need to be patient.

Really, my hope is that the filter can ultimately manage tank generated nitrates and this current high level from my well needs to be brought down. With this in mind, since several partial water changes with purchased and hauled water has done very little, I went ahead and ordered 2 of the Fluval Lab Series Nitrate Remover. I also bit the bullet and ordered the API Tap Water filter.

If I can manage low tank nitrates, I think I can cut back to say 10g WWC's or so and still have high quality water - however, I don't want to use my well water with such high nitrates - I'm thinking I'll use filtered water or a mix. IF my filter eats nitrates for breakfast, maybe I can use just my water, but I'm thinking that the modest use of filtered water probably makes more sense. In addition to removing nitrates, the tap water DI filter is also designed to remove other potential negatives (a somewhat long list), so it will be good on many levels.
My only concerns are reports of short filter cartridge life and the filtering process plus hauling 5g bottles of water.

Perhaps the next DIY project is to run a supply line and drain and use a trickle flow through the API filter to the tank - LOL

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Last edited by AbbeysDad; 03-05-2012 at 03:01 PM.
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post #53 of 127 Old 03-05-2012, 07:35 PM
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Might look and lowering your flow through the nitrate filter to help reduce the oxygen levels even further to promote the growth of the bacteria, also whats your pH?
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post #54 of 127 Old 03-05-2012, 08:34 PM Thread Starter
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Might look and lowering your flow through the nitrate filter to help reduce the oxygen levels even further to promote the growth of the bacteria, also whats your pH?
Thanks. It's an option, however, I think I want to give it a chance at the 3.5gph. Seachem claims the media works~ Matrix at any flow, de*nitrite at flow rates less than 50gph. After reading a fellow that had success at 30gph (7 foot/4" tube), I questioned Seachem Tech support if my flow was too slow. They thought my setup with the Tom at 3.5gph would work well.
When you look at it, there is a lot of product in this filter and all things considered, it may take some time before the beneficial bacteria gets established in numbers large enough to do all that's required. Granted, the Stability should have kick started things. However, Since I tore the system down three weeks ago and had been using Purigen just prior to setting this up, the water column needs to develop some character to feed the bacteria. I also feel I need to get nitrates lower in order to truly measure the filters performance.
Like many things bio related in aquariums, I/we need to be patient.

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post #55 of 127 Old 03-06-2012, 08:58 AM Thread Starter
As near as I can tell from the high/low API tests, my pH is about 7.6.

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post #56 of 127 Old 03-06-2012, 09:02 AM
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I agree. It can take 8 weeks for nitrification bacteria to become established, why shouldnt denitrifying bacteria? Personally, im willing to wager that after several weeks (6-8) you will have to remove some media. Now taking bets...

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post #57 of 127 Old 03-06-2012, 11:55 AM Thread Starter
I'm not sure what you mean about removing media?
According to the labels, Seachem claims that for both Matrix and De*Nitrate 1 liter treats 100 gallons. Okay, so my DIY filter has a mixture of 3.5~ liters of product... So for my 60g tank, technically, I have way more than enough media to do the job. On the other hand, the bacteria population rises and falls based on the conditions (food and oxygen [or lack thereof]) regardless of media volume. I shouldn't need to remove any media, so put me down for a dollar bet

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post #58 of 127 Old 03-06-2012, 07:42 PM
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I think it was sarcastic, well I hope so cause I have about 200 gallons of media in my 90 gallon setup and I actually have some matrix in there.
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post #59 of 127 Old 03-06-2012, 09:12 PM
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Not at all. I have read a few times that over denitrifying can create h2s, which is toxic.

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post #60 of 127 Old 03-06-2012, 09:21 PM Thread Starter
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Not at all. I have read a few times that over denitrifying can create h2s, which is toxic.
Better share a link homeboy cause I think yer blowin wacky tobacky smoke.

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Last edited by AbbeysDad; 03-06-2012 at 09:24 PM.
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