Here's my story. I got into zebra plecos about 5 years ago. I researched them for a while before I purchased 8 juveniles over a period of time, and lost 1. I've had 7 (4M/3F) for about 4 years now and they spawned for the first time in December 2010, a second time in January 2011, and the breeding male is currently trapping a female as we speak. Of the two spawns I've had, there have been 5 and 4 viable fry respectively.
Here are my answers to the common questions...
34 gallon "corner hex" tank (breeding colony).
1. Water parameters
a) Temerature range - set to 87*F, using a Hydor ETH and Ranco Temperature Controller
b) pH. 7.2
c) GH. varies from TDS of 100 to 300, best kept at/around 150.
d) KH 2-3
e)Ammonia, Nitrate, Nitrite, levels. - NH3=0, Nitrite=0, Nitrate=<20ppm
f) Water change frequency - varies from 1/month to 1/day. 100% RO water, reconstituted as appropriate
2. Tank set up
a) Size. - 34 gallons
b) Substrate. - 1/2" thick mix of ADA Aquasoil and EcoComplete
c) Filtration. - Eheim 2078, Eheim 2234 with Corlife 18W TurboTwist UV Sterilizer, Eheim Aquaball
d) Furnishings. - Slate caves, clay caves, slate rocks, manzanita, some plants
e) Other tank mates. - rummynose tetras, green neon tetras, amano shrimp
f) How long has it been set-up? - 5 months in current location, but the tank has been moved 3 times in 4 years
g) When was the last new fish added? - 10 months ago
h) Foods used and frequency? - live foods, frozen foods, dry foods - you name it.
Here is a picture of my setup, the gravel and plants have changed, but the idea is the same:

Here are pictures from the first spawn - when I put the fry in a breeder trap at 2 weeks of age:



Here is the most recent picture of the fry, comingles from both spawns taken about 2 weeks ago:



I hope everyone enjoys! If I can be of any help or a resource around here, please don't hesitate to ask.