I am sure eventually I will figure this out , but I am a plumber NOT an electrician lol. all I need is to see it done once and I will be confident . I don't want to wreck the thing trying to do it . The directions kinda stink
was planning on 4 bulbs with 2 ballast , I might just install 2 bulbs since I will have 3 250 watt halides as well. the schematic helped me a bit . and I didn't know I needed bulbs to install this thing . ( now I do ) so I ordered bulbs should be here by saturday sunday the tank will be stocked and all lit up )
How big is the tank? Stick with the 4 bulb configuration. You know that if you only do two bulbs you are going to wish you did four. lol Depending on the ballast you have you may have extra wires so just put a wire nut on them because they are not needed. It is not that hard to wire it up.