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Originally Posted by sewerman45
Ok. This makes way more sense. KH is alk. Thank you. I was so confused for a bit there and now am more than a little embarrassed.
So I guess that my alk isn't causing any kind of problem with the bio-pellets and I should just soak them longer so they stop clumping at the top and maybe look into a better reactor. Does anyone having suggestions for a better reactor? Or should I just stick it out and use this one... or is it even worth using one when my phos is undetectable and have pretty low nitrates?
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There are people who hates biopellets and then there are people who swears by them. Biopellets seems to be one of those things which, if you can make it work, works but otherwise screws up the whole tank. My experience with biopellets was bitter and hence I moved to zeovit.
Maybe post the values of your ca,alk and mg here and people will be able to help you more. Occasionally, wrong bacteria can start feeding on the biopellets and cause the system to crash so you have to make sure biopellet is being used by the right nitrifying bacteria but first and foremost important thing with any ULNS system is to make sure that the big three are in NSW range, alk being the most important one. It has to be between 7 to 8, you can probably push it to 8.5dkh. And tumbling is very important for biopellets.
There are quite a handful of biopellet reactors on the market so choose whichever is suitable for the amount of pellets you use and the size. I think vertex has some nice ones.