22 July 2016

tenner maint

Very routine on this tank today. Just picking out the yellowing and disintegrating spirodela polyrhiza is not enough, it turns out. It filled in the surface completely, Oliver was having to search for a gap to take a breath. Will have to remember to take out a good handful or two each week.
I love watching fiddleheads of ferns uncurl- whether it's terrestrial or here, under the water.

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