| Dick,
Really interested to see your results. My Bakki is a 3-tier version and it had 10 litres of BHM in each tier. Not having a lot of cash to splash at the moment, I moved the 10 litres from the bottom tier and put into the top two tiers. I filled the bottom tier with bac balls!
This was only a month or so ago and the DOC is still on the pond. Thought the 'extra' bio filtration may have helped here.
As this Bakki is only part of my filtration, perhaps not an idea test using the Bac balls. I'll have to dig deep, or try something else - Lava Rock???
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Regards, Bob ><{{{{º> ><{{{{º> ><{{{{º>
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