First-timer Questions

[1stbetta]

Hello all,
After many unsuccessful attempts to register, I've finally managed it, so here are a few questions I've had for some time:

1) Can I add a Betta right away to a treated tank with proper temperatures? I've actually been cycling it for 2 weeks anyway, but I want it to be perfect for my new addition.

2) Maybe the wrong forum, but will a dying plant put off toxic levels of ammonia?

3) Are fancy guppies compatible? I assume so because they're not too aggressive, and I am doubling the tank right now as a nursery, which leads me to...

4) How big do fry need to be to avoid being eaten?

Lots of questions, I know, and I'm sure I'll have more, but this is a start. I've got two stores in mind to get them from, and their Bettas are very active and healthy looking, so that's my plan. I'm happy to join the hobby, and thanks in advance.

 

[joycould]

If you have enough plants your ammonia will be very low or non existent.
If you have snails they will keep the plants clean of algae and eat the dieing parts however they are little poop machines.
Guppies are not a good idea with bettas because of the bright colors the betta will attack them or the guppies will get nippy.
If you are looking for a fish to go with a betta think of cory or otto catfish (I only keep snails in with my bettas).
You didn't say what size tank you had but smaller tanks have to be watched for water quality I have found snails trying to escape when the water quality starts going down even just a little bit.

 

[1stbetta]

It's a ten gallon, so I think the water quality should be fine. OK then I'll wait for the guppies to grow and then I'll put them back in with the turtles before adding a Betta. I already have a Cory in there, and I'll probably add an African Dwarf Frog. I have to create some sort of sponge to elimiate the current before I add a Betta anyway.

 

[littlest]

What type of cory do you have? Cories like to be kept in groups and a lone one won't be very happy.
You should remove any dying plants. Dying plants do produce ammonia.