Hey guys i just signed up, my names zach my friend told me about this site when i asked for some tips about building my own glass tank. and you guys got some real amazing tanks and fish . now i dont have fish but i got some cool turtles and there only 2" now i had them since they were baby hatchlings and at full grown there gonna get about 12" so im going to need a big tank. and buying the size i want is expensive so since my dad is a real handy kinda guy i figured me and him could build a tank i want atleast a 150gallon long style not the small and tall and i plan on using 3/8 or 1/2 inch for glass and GE silicon I windows and doors now is that silicone good? cuz i can buy a 4 pack at lowes for 15$ or i can get the small tubes of aquarium silicone from walmart but ill need alot of those lol, so if u guys have any tips at all or anything i should know please let me know this is the 1st tank ill be building and i checked out that graf thing that gives me the materials i need and stuff and when i build it should i build on top of the bottom peice or should i build the sides surrounding the bottom peice of glass and also what are some good measurments for a 150 gallon long LxWxH but it still needs to have good depth. Thanks.