<a href=showthread.php?s=&postid=12641621#post12641621 target=_blank>Originally posted</a> by Bruno3047
djfrankie - First, thanks again for sharing your brainstorm with us. So you now have the unit running with no recirc pump, just the flow from your tap-in from your return pump.
What do you think the consequences would be if a unit, built out of a phos-ban reactor with just a gas release valve out of the top and a return outlet an inch or two below were allowed to run on a newly set up system with no recirc pump?
There would be no urgency to get the unit cycled so I'm wondering if the recirc pump would be necessary in this case.
I understand, of course, that I would have to wait until my tank was fully cycle through the nitrification process before adding the DJDenitrator so the bacteria would have food to proliferate.
Any help would be much appreciated
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I'm assuming, correct me if I'm wrong, that you will be installing this sulfur reactor in a new system with zero or very low nitrates form the get go.
I think if you start it off this way you shouldn't need a recirculation pump. Please wait until your tank has completely cycled before adding the sulfur reactor into the equation.
Again this is totally dependent on individual systems as no one system is identical to the next. Your bioload, feeding habits and maintance schedule will dictate wether you will need to add one later on or not.
There is a big difference between bringing nitrate levels down in an old mature tank and just "maintaining" them low in a new setup.
I have currently removed the unit from my tank since I wanted to experiment a little further with it.
For example, I wanted to check:
1- How well the midwestaquatic media was holding up inside the reactor. (excellent)
2- Check exactly how much bacterial slime was accumulated in there as well. (very little no none)
3- Keep and eye and document how fast my nitrate levels start accumulating now that the unit is off. (in progress)
4- See how long it will take to cycle the unit when installed back into the system now that the media has been washed and stored in a sealed container. (not tested yet)
Let me know if you have any other questions and good luck!
djfrankie