Had these for a while and they havent even looked interested in spawning.
SET UP
2ft 60ltr Tank
UGF and pea gravel
Eheim external 450lph wih difusor
Eheim Aquaball
Addtional airstones
Parameters
Temperature 82f/28c
PH 6.6ish
TDS 200 before 2 x 40% cool water changes, 140 afterwards
Nitrate 20
Ammonia 0
Nitrite untested
Occupants
Trio of L309 Ancistrus 1 male 2 female
3 cories
Gazillion Assassin snails
Cherry shrimp
Tank

Picture of male just after purchase

The mountain of eggs which the male is really struggling to guard.
You can just see one of the females at the side of the cave under the slate

Cheers
thegeeman