Without seeing how do you?

[Baccus]

Without seeing evidence of baby shrimp or tiny newborn fry being born how do you determine that there is little new additions to your tanks? In my native tank housing Spotted Blue Eyes, Blackmore River shrimp, Chameleon Shrimp, Darwin Rednose and Darwin Algae Shrimp, Notopala snails and at least 3 other types of snail. I can tell there has been successful breeding by the number of Hydra. Anytime the hydra have another explosion in numbers I know that there is or has been new fry or shrimplets born in the tank. When ever I see the hydra in places they can be removed I use a length of airhose to suck them out of the tank while doing a partial water change.

[zn30]

@Baccus As much as some dislike placing pond snails into their tanks, they control the hydra in my shrimp tanks. Also noted the shrimp tear the snail egg sacs apart and seem to be eating the eggs.