Bog filter 2012

Upper tank in August sunshine
Penny royal in small tank.
Hyacinth, bean and fairy moss.
Blooming reed

The larger of the upper biofilter tanks is doing really well, though the water hyacinth has not bloomed this year and I’m holding no hope that it will.  The triangular water reed has nearly tripled in size even after removing half the original plant last spring to give to Mindy.  Jill?  Can I restock you when I cut this back in the fall?

This year this larger filter tank is loaded with hydroton which provides shelter for the roots.  The water bean, hyacinths and reeds are mega happy, sans blooming.

The smaller tank is also filled with hydroton and has last year’s penny royal which amazingly enough, wintered over due in part to the tank being made of closed cell foam (insulative), containing hydroton (insulative) and filled with standing water (insulative).

Because the maple tree and the triangular reed are sheltering the smaller biofilter tank from the sun the penny royal is growing much more slowly, which is a plus.  Last year it was horribly root bound it grew so fast.  I cut out most of it and thew it away, then took the remaining bit and cut it in half to give to Mindy.

I like the fairy moss as a fill-in between the larger plants.  It helps keep the mosquito population down.  Having marigolds growing in a pot on the back frame helps as well.  I don’t worry about mosquitoes in the big tank – fish food!

The reed is blooming, though it hasn’t yet peaked to produce the mass of feathery tendrils that will be the end product.

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