Quote:
Originally Posted by
chappy http:///forum/thread/386727/bio-wheels-and-nitrates#post_3398516
Please read the following, it is the argument I was given to remove the BioWheel. Please do not think tis is my idea, it was sent to me to have me remove my biowheel.To be honest I don't even understand it
Biowheels are too efficeint. With the amount of O2 around, you'll never see any of the NO3 -> N2 + 02 reaction occuring in the biowheel. Since it is real good at creating N03 and your LR/LS is less efficient at breaking NO3 down to nitrogen gas and oxygen....nitrates will build up...basically your denitrification cycle is not balanced.
Now, if you system is balanced (and as you said stocked with proper bioload) the LR/Ls should be able to keep up the cycle.
Another potential problem that most people don't think about, your system is going to become "dependent" on this external form of filtration....what happens when you change the biowheel (8-12 months) down the road? Your system will loose a large portion of its biological filtration and you'll probably see a small cycle. If you leave the filtration to the LR/LS....this will never happen.
Help ( sorry guys i did not mean to start any thing) I am just really confused. Does the biowheel make nitrates and you tank can't handle it
It is true that if you have media like a bio wheel, you will lose good bacteria if you remove it...Here is a story to help explain
I ran a canister filter and everytime I cleaned the filter I got a small ammonia spike. 0.25 that's because I removed the media and put new in each time, so I lost good bacteria. I started cleaning only 1/2 of the media and my problem was solved.
The media is where the bacteria family lives...as long as there is enough food (ammonia) they will stay and have more babies to eat more food but if there is not enough food, they stop having babies. and just eat what is available. There is only enough bacteria to eat what is there to eat...so the two are in balance, the amount of ammonia equals the number of bacteria families. If you remove a whole rock at one time....you remove a bunch of bacteria families....those families are gone now and won't be eating dinner, so now there is extra food floating around (ammonia spike).
The bacteria family poops nitrates, so you remove the old saltwater and replace with new saltwater...flush the toilet so to speak.
The bacteria families grow where they can...all over everything. So removing anything changes the balance. If all you have for the bacteria to grow on are the rocks...then all the ammonia eating families make their home on the rock....if you have a biowheel hotel they grow there too. In a year if you remove the hotel...those families are gone and the tanks balance is affected.