Dawn, I was thinking about your shoal grass situation. I've tried these in the past in my river tank and my grasses died out this spring in my tank, so I didn't think to suggest them then. But, I've since collected more river grasses and after re-planting my river tank, I put a bunch of the Jobes Fertilizer Spikes into my gravel, and my plant growth took off this time. I posted a video on my thread. Maybe these would work for you? What do you think Michael?
All I did is cut them into thirds, then shoved them into the gravel under the roots of the plants. I have a pretty high bioload too, so plenty of nitrates for them LOL.
I also used the Miracle Grow ones and they seemed to work just fine too, although they tend to dissolve a little faster, so you need to get them into the gravel faster.
