Dear Misha. Sorry for the late reply. First of all, thanks for your comments on this subject. As you propose, I woul be interested in hearing your ideas on how ​to improve ​efficiency of ​your bio ​filtration and ​aeration. Regards, Carlos

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Dear Misha.

Sorry for the late reply. First of all, thanks for your comments on this subject. As you propose, I woul be interested in hearing your ideas on how ​to improve ​efficiency of ​your bio ​filtration and ​aeration.

Regards,

Carlos