Just saying hello before I ask for a little bit of advice. I've been browsing through the forum for the past couple of days just gathering some info.
I've had a 10g tank running for the past two years that housed a betta and three corys. The beta recently died and my five y/o son was sad and wanted more fish. Problem is he wants those funky little glo tetra things and I want another betta. Can't house all those fish, including corys, in a little 10g. So, I bought a new 37g.

Now I'm trying to stock this big thing.
The 37g was seeded with the stuff and gravel and old filter from the 10g along with the corys. Cycle has gone well so I added three male and five female guppies. In less the two days all five female guppies died. The males are doing great. Petco said they will give me five more females on Tuesday when they get them in as it seems they have "sold out". Personally I think they had a problem and they all died but that is just speculation.
Yesterday I decided that another Cory would be nice and allow them to form a small group and I got an angel also. All are doing great but the angel seems to like to hang out by the heater and rarely comes out to "socialize". Figure he just getting used to his new home, he's just a little guy. Keeping an eye on him though.
As I said, five female guppies are going in on Tuesday and at least five glo tetras are going in soon after. That makes:
-four (maybe five) corys
-eight guppies
-one angel
-five (one of each color) glo tetras
How much more can I add?
Would like a second angel and a larger group of glo fish. Do I have that much room in there?
Trying to add a pic of the tank. Hope it worked.
Thanks for your time.
Chris