I know once corys start spawning the same group-if well cared for-will spawn regularly. I have had green corys before but never had a breeding group together long enough to get a pattern. My question is, do they spawn every few days laying a small amount of eggs at a time or more of a bunch of eggs every 2 or so weeks? I'm speaking about groups of 3-4 corys, not a whole schools. Is there a way to regulate this or do they just "do their thing"? I'll be breeding my corys before too long (they are 7 months old atm) and I'd like to be able to know how often to expect eggs once they get the hang of it. Also, I have access to soft and hard water. I've been using soft right now because the hard water tap is tiny and takes forever to fill my buckets. Would the hard water come in handy when I want to trigger spawning?