Acrylic latex is the same as the base in aquarium-safe spray paints. Some kind of additive could potentially be an issue with leeching, but I would assume it's relatively safe after proper curing, and should be truly waterproof if that's how it's labeled. If you want to be extra safe, you might consider sealing that bit with a thin layer of silicone and eco earth.
it is covered with eco earth now and ill
be leaving it for probably a week before I start any sort of water exposure. I would assume that is enough time for curing?