3a - Solar Hot water

i just though i would post some of my research into solar hot water systems (since it effects the roof angle), the ideal angle for a solar hot water system is equal to the latitude of the site, the latitude at our site is 12o 56’ 21.1’’, this means that our hot water system should be ideally at an angle of around 12. since hot water systems are normally flush with the roof this would also need to be the angle of our roof where we intend on placing the hot water system... we might need to see how this fits onto our section. also the size of tank needed would be approximately 440 L, for six people and collector area of 6m squared(there are a few things we may want to consider to do with tank size)...there are a few other things but these are the few things that i thought might effect the design...for example roof, angle and area facing north...