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skimmed this thread a bit but always have been curious.
I am thinking of a pretty big FOLWR system 375 gal and for filtration I would be running:
filter floss
UV set for parasites
skimmer
ATS
possable fuge to grow maco to feed the tangs
would adding a DND to the mix be a good idea?
I love the fact it can be DIY for pretty cheap.
You initially filtration plan is solid and I would wait for the DND until your ATS and bio load mature. It is easy and cheap enough to add on down the line if needed. Just my $0.2. Also for a FOWLR consider aggressive mechanical filtration which also helps a great deal!
I was thinking the same thing too. be pretty easy to add down the line if I needed.
what you you recommend for the "best" mech. filtration then?
Best!? As in effective and convenient? Probably an Automatic RollermatI was thinking the same thing too. be pretty easy to add down the line if I needed.
what you you recommend for the "best" mech. filtration then?
Thanks but its a bit beyond my skills, i dont even know what half the things mentioned actually are.@windemerejack this seems better than an ATS or chaeto. At least IMO.
1st problem - if reactor is on the ground then vodka dosing port is WAY below water level.Best thread I came across so far in r2r and I'm glad I found it! Been reading most of the post over the last couple of days.
What an AWESOME concept!
I'm planning a sumpless 110 litre (about 30g) tank and would love to give this a go. I'll be cycling the tank first of course so it won't happen any time soon.
I'm torn between the idea of a small in-tank unit and a super tall external unit.
If I were to build an external unit, it would be sitting on the ground next to the tank stand, reaching all the way up above the tank connected with the in, out hoses from above. So I'd guess around 1.5m or a bit less. The pipe diameter I have in mind is 89mm outside, 78mm inside (about 3 inches) for both internal and external units.
The in-tank unit is pretty straight forward, it would be about 60cm tall, standing on a corner inside the tank.
For the external unit, I have a few concerns like the possibility of it leaking (from the hose connections, dosing port, due to clogging or poor built quality, etc), about pipe having issues handling the water+media weight, sludge accumulation in the bottom(I have no basis for this but maybe for it being too tall with little flow?), tipping it over by accident etc. On the other hand, it would be very nice to have the extra water volume and space in the dt with the unit being outside.
So this is the greed vs fear thing.
Also, being only 110L, the size of the tall unit would definitely be overkill. Should this matter?
Any input would be greatly appreciated.
1st problem - if reactor is on the ground then vodka dosing port is WAY below water level.
for the most part this unit is gravity fed.
2nd.: 110L will have a very low bioload especially if you build a big unit. You might run into problems starting the reactor or keeping it consistent or with Sulfur-dioxide build up.
This is a tool for bigger systems - IMHO at your volumes I probably would not bother - just to a bucket water change every week should fix ALL your problems (and you will have others besides nitrates). Maybe latter when you have a system going you might want to try one but IMHo thsi is not a priority for a new nanotank
well If you increase flow it will exaserrbate problems with bioload. Idea is bacteria eat amonia/nitrites/something to use up the oxygen in the water. If there is not enougth nutrients in the water oxygen will not get absorbed and anaerobic zone will not form. Well that is my hypothesis at least though im not so sure ... scratch that - just do an experiment and find outThanks, Dancingwind, much appreciated.
1st problem: What I meant was the external reactor on the ground being taller than the water level so that it can be gravity fed. I should have worded it better.
2st: Yeah... You may be right. Deep down I may have already known that my bioload would be too little and small water changes would be the way to go. I just didn't want to admit it. I'm tempted to go for a bigger tank just so I can try this out. Or run the tank dirty on purpose.
As for the sulfur issue, couldn't I mitigate it by increasing the flow? From what little I understand, it's only when the nitrate is all used up that this becomes an issue so if the flow is increased just enough to make it a little less anaerobic and less efficient to have some nitrate remain, could it work?
We will need a lot more info.Hi everyone. I need help...
Can someone tell me where is the problem or where i must check first if my DND can not do the Denitrification?
Output from DND 12.5 after 30 minute from dosing carbon source (NOPOX)
Main Tank 12.5
My DND already running for 3 weeks new and dose Bactery (daily) and Carbon source (2 - 4 hourly)
My tank is only 50 gallon so i set the output drip by drip can not get fine stream to reach 5%-10% flow. The smell is bad enough now.
I hope you can reach my question since my english is not good >.<
Hi everyone. I need help...
Can someone tell me where is the problem or where i must check first if my DND can not do the Denitrification?
Output from DND 12.5 after 30 minute from dosing carbon source (NOPOX)
Main Tank 12.5
My DND already running for 3 weeks new and dose Bactery (daily) and Carbon source (2 - 4 hourly)
My tank is only 50 gallon so i set the output drip by drip can not get fine stream to reach 5%-10% flow. The smell is bad enough now.
I hope you can reach my question since my english is not good >.<