Just IME, when my guppie frys were born they ate the algae. The microorganism off algae is not such a bad idea.
Guppies ar herbivores and graze on algae as part of their diet anyways. The jag fry will eat some algae, but like I said it's the microorganisms that really help.
I checked on some sites that stated it shall be 3 days before the eggs hatch, and an additional 5 days before the fries start swimming. Is this the rule of thumb? Currently, I can still clean the tank/pond as somehow the eggs are laid on the other side from the drainage pipe, and I can use a hose to remove excessive waste and algae which are away from the eggs. Hmm.. These fish must know something. ?
That's pretty close to standard fro any CA substrate spawners, give or take a bit. And any large cichlid pair with spawn is dangerous to tankmates, hands, long handled glass scrapers, nets, or just about anything else that moves in the tank, lol.
WYite