hhmm, ive seen people use 50g and some even smaller. above 30g is good enough for me. when they lay eggs remove the male after he had fertilise the egg.
Use a big tank not a 30. They need room to get away from each other when they display and interact. Trying to breed two aggressive fh in a 30 is obviously not going to go down well if the fh dont even like each other. 2 fh in a divided 30 is pretty messed up anyways.
well, it's possible, becuz my friend made it possible. lol my plan to you was to breed them in the 30 and when the female lay eggs and the male already fertilize it, just remove the male. do u have any other bigger tanks OP?