First does live sand need alot of water circulation? i have 300 gph right now and am getting money to buy another but i was wondering.<<That's not a lot. I would get more, you need to get pretty brisk circulation to start forcing the water down thro' the sand by moving it quickly across the sands surfce. I don't mean you need the water to be digging holes in the sand>>
Second i have tanish algae building up and i dont know what to do.<<This does sound like diatoms. These are normal if you used tapwater and it has slicate minerals in it(most does). Once these are used up the diatoms die (Malthusian crisis) as they need to the slicate to make silica skeletons. I am not going to say if you should use tapwater or not , as I ,sin of sins, use straight tap in my tank. However if you live in a metro area with skanky water you need to investigat where you can get RO or cheap , purified water. What passes as OK for humans is not always ok for marine aquaria>>
Third i know i am waiting for those pods but how will i know can i see them?
<<The look like little shrimps. But if you got bagged live sand, then you are not likely to get any as live sand is , in all honesty, a terrible trick. It's decent sand, but almost entirely dead, except for a few, and not a very good range of, bacteria. The best way to get pods isto get asmall amount of very good quality live rock.>>
'PO4 and SiO4 can also come from the sand you use. Be careful when selecting the sand, especially if you are using play sand' - while it is technically possible to get PO4 and SiO4 from sands, it is in all honsty really unlikely. If yo get a clean sand it is unlikely to contain any materials to rot out to release silicate SiO4 , and Si=2, which is what quartz sand is made from is near as damn it insoluble (good, otherwise our Si=2 tanks would dissolve). PO4 is not a common component of sands (except in aquaria where it's put there by aquarists and bound to calcaerous materials.....)