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#126
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2 H2O + 5 S + 6 NO3- -> 3 N2 + 5 SO4-- + 4 H+ Which does produce some free H+. My own experience has been that after the initial drop of nitrate, my tank now doesn't really have enough nitrate on a continuous basis to really result in any significant amount of calcium being released into my tank.
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Lee |
#127
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Looked back at my log from when I put my unit in. My tank was reading around 40 on Nitrate when I installed it. The unit took about 7 days to hit 20 on the effluent, and another 5 days after that to hit zero. So a total of 12 days to hit zero at 1 drop per second, and my unit at that time had a pretty big sulfur load in it, probably about 4 to 5 inches in the 7" diameter tube it has in it. Then once I increased the drip rate to 120 drop per minute, and it took almost 20 days to hit zero again. But then when I increased to 180 drops per minute, it only took about 7 days to get back down to zero.
One thing to consider, if your unit is outside the sump, and the room is pretty cool, it may be retarding the bacterial growth. I remember one person was having trouble getting this unit to break in, and his was in his basement, so the unit was getting really cool, low 60's. He moved it to be inside the sump, and it was much better. The bacterial growth at a low temp is much slower than at a higher temp. If you wanted, you might even try putting the unit in a water bath, maybe a tub of some sort, and dropping in an extra heater, and bringing the temp up to the low 80's. A few degrees can increase bacterial growth quite a bit, and it might help kick start the bacteria into high gear. Just a thought, but if you've got the extra equipment sitting around, and you find your effluent is pretty cool (take a sample, and check it), you might give it a a try.
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Lee |
#128
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I'll keep that in mind. Thanks for that.
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Marc Levenson - member of DFWMAS |
#129
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I've noticed a slight drop in alkalinity. Say, from 1300 ppm to around 1250 ppm.
I'm making adjustments to bring it back up. Quote:
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#130
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My alk dropped from about 125 ppm to 120 ppm... |
#131
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apollo |
#132
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These units run at a slow rate. At a higher rate I think the unit would not be void of O2 and the bacteria to deal with nitrate need to have that void. Also the units have a pump to circulate the water within the chamber, allowing for no dead spots and acculimation of "sulphur rotten egg issues".
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#133
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#134
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hello seattownreefer, i got an mj1200 because the pump is used on two more reactors, one with phosban, one with carbon and the other with no-no3 sulphur media, this thing pumps like 250 gph and i had it at hand, so i divide the flow between the three.
the reactor is filled up with no-no3 media from one sponge to the other, since the media comes blended with aragonite you will not need to add calcium media, the drip rate can be worked with the ball valve, first start at one drop a second, it can be done. remember test, test, test, until you are happy with the nitrate coming out off your denitrifier, it will take like 7 days for the reactor to cycle. good luck sana
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What the heck is that new thing in my tank? |
#135
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on a side note, please take note that the outflow of the denitrifier will have low ph, like 7.8 or so, this is IMO did not have an impact on my tank, you should also keep an eye on alk, again IME it did lower my alk a bit, i just dose a little bit more of 2 part, my next step from here is getting a calcium reactor and making my tank as self sufficient as i can.
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What the heck is that new thing in my tank? |
#136
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thanks sanabit!. i see that you have a sump, where abouts did ya drip the effluent from the sulphur reactor? back to the return pump? the order of sequence for your 3 stage was sulphur, phosphate, then carbon? thanks
apollo |
#137
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seattownw, the pump is pumping to three different reactors, so i divided the flow between the 3, i did not daisy chain them togheter, if you just want to make a denitrifier you can use a smaller pump, one that pumps 40 gph perhaps, or if you have a sump, tee off of the return pump and send it to your denitrifier.
remember 1 drop a second for 7 days, test, and after you feel good with results you can up the outflow to 2-3 drops a second
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What the heck is that new thing in my tank? |
#138
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thanks for the tips and clarification.
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#139
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I have a Midwest Aquatic unit. The phos reactor DIY seems great but I wonder about clogging media issues over time with it. The way it is running it seems the flow is by drip line only with no internal circulation created via a pump as with the Midwest or Korralin units that have an Ehim pump on top of the unit. Would love an update in a few months on how the DIY is going.
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#140
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