Job's PLant Spikes?
Has anyone ever used Job's Plant Spikes in their aquariums? If you have, how did they work? Did you use a whole spike or did you break it up into pieces? IS there anything I need to look out for or be careful with? Is there a better alternative?
The reason I ask is that none of the LFS's in my area carry anything for aquarium plants (although they sell plants, go figure). So I was looking for a low cost fertilizer for the substrate that I can insert after the tank is set up. The LFS's do carry fertilizers for the water, so I can use those for that, but the have nothing for substrate.