Eric,

I will let the 'smarder-than-me folks address your issue, however, from someone who just killed off a pond of Hybrid BG...go with native BG or CNBG instead. HBG lead to problems. You can search and find lots of threads on this issue.

Just my 2 cents.

Best of luck on your new pond.

Gator

- Smoke 'em if you got 'em

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