I run my system with a bog filter, full of plants and pea gravel. I have around 12000 gallons of moving water kept perfect with the bog. No green water, minimal algae, crystal clear water. This picture is the 5 foot deep area, you can see the trap door snails on the bottom. and bits of pea gravel that has collected over the years . The plants are bits of hornwort starting to grow.I Never thought of a bog filter. I will have the room for one. I will have to research . Thanks this site is awesome
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