I have 2 in my 30G and 1 in my 18G and there are batched of eggs in the hoods of both tanks. Will the single one in the 18G fertilise its own eggs? i asume like normal snails they are hermathrodytes (spelling?) and are the babies easy too look after and raise to adult hood? as this could mean eatra algae eaters! yay. (i have an algae problem)