Hi Bev,
No, I never did come up with anything for those planter boxes in the pond. The only thing I've done is occasionally put dilute miracle grow in the box with the pump turned off, let it sit overnight and then turned the pump back on. The pond was murky for a bit but cleared up.
I'd like the name of the seaweed fert, I'll see if I can get it here. It's difficult to import fertilizer, can you imagine a seaweed bomb? However, with the name I might find it already here. I did collect seaweed one year and composted it, it smelled horrible. I'd be willing to do it again in a smaller batch and with a better sealed container.
It is pothos and philodendron that I have bare root in the pond filters.
thanks for the reply,
Jonna