Just an update for those interested. My gelatin capsules arrived today, so I placed one in tank water to see how long it would take to dissolve....
Within 20 minutes it had lost its cylindrical shape, and after 1hr 30 mins it had completely dissolved into the water!
Furthermore, when planting the capsules, if you fill them with water (individually as you plant them), they dissolve MUCH quicker (read: minutes) and have the added advantage of sinking rather than trying to shoot to the surface like torpedo's!
Within 20 minutes it had lost its cylindrical shape, and after 1hr 30 mins it had completely dissolved into the water!
Furthermore, when planting the capsules, if you fill them with water (individually as you plant them), they dissolve MUCH quicker (read: minutes) and have the added advantage of sinking rather than trying to shoot to the surface like torpedo's!
