my tank is a 55gal. well i had 2 18in spider reflectors for the mh. i ended up cuttin one into 2. and put one on each end pointing at each other. then i have 2x55 in the front with the reflectors in a line. pointing at each other. then for the 2x65 i got them in the middle between the mh. useing the mh reflectors. about 4in of them arent under a reflector. for the vho i think u mite be able to use the reflector from them for the mh. u mite have to get new end caps if u have the 2 hooked together ones. use the single ones so u can place them closer together. so u will have 2 VHO side by side and then the mh one on each end. then the other 2 vho. so the mh are in the middle. or u could use the mh reflector and get the uri bulbs with the reflectors inside them. even if u cant fit them 2vho should be enough actinic. when i have my mh on, u cant really see the actinic, but the 5050 makes the color more whiter. so 2 will work, 4 would be better. u can get enough light.lol
i havent seen my zoos look this good. i thought they were great with pc. now with mh, they got more color, and they filled in more(open bigger). i really didnt like the one zoo i got. the color was faint.(orange green,purple) now they are one of my favorite ones. lol