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I've heard that short term it reduce territorial aggression, but that normaly comes with breeding.

If the Mbuna are already breeding and ther isn't aggression problems, I would say to leave it alone.

If you've tried everything and they still wont spawn, changing the way its aquascaped may change the pecking order, letting other males have a go.

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I have heard this too but also unsure if this is true. Have also heard that stirring up the gravel (i.e. vacuuming during a water change) can alter the hormone level in the tank which can supposedly also lead to spawning? Be great if someone could let on if these are myths or not.

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Well, what actually happened was my Elec Yellows began breeding back in December, got several broods of fry from 3 different females. Then suddenly they stopped. I keep the PH ~8.1, weekly 30% water changes and feed HBH Veggie Flake and HBH Cichlid Flake Frenzy.

Only big change I can see that may of had an impact, has been the removal of five Tropheops juvenile "dither fish", as they became too nippy. The yellows stopped spawning as the Tropheops became more aggressive, but now I can't restart them (so to speak).

I recently introduced new blood in the way of 5 juvie yellows from DFishkeeper (thanks Doug, quality stock). Then I changed around the rocks, pipes and a water change on Wednesday night, but no mouthfuls this morning. :(

Not being impatient, been about 4 weeks since last brood, but they're fickle little buggers.

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Changing rockwork for me with my few mbuna hasn't triggered any spawning but def has kept them more relaxed and less stressed.

The changing of rockwork ive tried with my other africans but that hasn't helped either with the spawning.....

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I actually dont find this to help as you are unsettling the colony and if the coloy is unsettled they wont breed what you have to remember is you cannot expect fish to breed constatly these colonies do require some downtime from breeding and this can be as long as six months lay off of breeding . Some females also get to a point the have been bred out and stop spawning . The only time it is beneficial to move around rocks is when you add new fish to a colony. Also remember as a colony gets older breeeding does slow down. SOme food for thoguht.

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