What do people do with their bogs, have the stones above the water level, so no freestanding water, or stop the stones just below the water level?
Up to now I've done the latter, where the gravel/shingle stopped just below the water line, leaving a small volume of open water. I did this as it looked aesthically pleasing, and I'd hoped it be beneficial to wildlife. But this year, it just gets overwhelmed with algae. So I've topped up the shingle such that there is no standing water (well it was never "standing" as its always flowing slowly).
Also, something overnight had completely decimated my dark red plants (Lobelia Cardinalis). So thinking maybe was water snails, so without this free water they'll retreat to the main pond and maybe the lobelia will come back.
Up to now I've done the latter, where the gravel/shingle stopped just below the water line, leaving a small volume of open water. I did this as it looked aesthically pleasing, and I'd hoped it be beneficial to wildlife. But this year, it just gets overwhelmed with algae. So I've topped up the shingle such that there is no standing water (well it was never "standing" as its always flowing slowly).
Also, something overnight had completely decimated my dark red plants (Lobelia Cardinalis). So thinking maybe was water snails, so without this free water they'll retreat to the main pond and maybe the lobelia will come back.