The 1st thing you should check, is if you have a male and a female. They are definetely big enough to breed at 4". On the albino BN...sexing them is simple. The male should have a full set of bristles, and the female will only have bristles around the lip area. The foolproof method for albinos, is to look at the top of the head...just above the eyes. Males will have a orange/pinkish spot in that area. Females won't. Give them some type of cave to spawn in. A ceramic flowerpot (or the saucer it usually sits on) are fine. They can be purchased for under $1. Place it upside down in the tank...after cutting a 1-1/2" notch into the lip. This allows them access, while allowing the male to guard the eggs. If you have a pair and they are properly conditioned...my guess is that you'll have eggs in 2-3 weeks!
Good luck
