Just a normal bulb will be fine, They were nice in my old PVC enclosure increases ambient by 2-3 degree's but nothing special at all is need'd


And you should ONLY need 1 or the other, Flexx wat if your ambient temps are relatively high 76+(room temp) will give u rougly 81 ambient (mine was) roughly... if your room temp goes 70 or lower RHP will be needed, You SHOULDNT need both, but if you cannot get desired hotspot to 88+ (where rhp is) youll need to get flexx watt, but to start id just go with RHP (if room temps low) since flexxwatt is very cheap

Best of luck!