Homemade Internal Filter. DIY Aquarium Filter. Report
A short review of a homemade internal filter, and as promised, I'll show it in action.
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Filter sponge - http://ali.pub/1rgbbj
Bioballs - http://ali.pub/1rgbeu
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Official VKontakte group -
https://vk.com/aquasamopal
Twitter - / aqua_video_
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