What Should I Get For My Tank (shopping Spree)

Hello,
I'm going on a shopping spree on amazon for my tanks and was wondering what are some thing I should get.
I have 4 tanks: divided 10 gallon with two male betta's in it; A 10 gallon with a betta, 2 corydoras, and 2 harlequin rasboras; 10 gallon with 3 Glofish and 4 Nerite snails; 8 gallon With 4 fancy Guppy Fry.
I'm already getting the API master test kit. What other things should I get??

 

What do you already have equipment-wise?

 

I have filters and heaters for every tank except the divided tank but I plan on getting the filter for it. I have aquarium clarifier, water conditioner, stress Zyme, fin and body cure, a couple nets, gravel vac, and the food and root tabs that is necessary

What do you already have equipment-wise?

 

I use a meat thermometer to get more accurate water temperature readings. It works great. Other than that, it looks like you have all the basics. I can't think of anything else off the top of my head.

Oh wait! You should order extra API test tubes. I've dropped so many

 

I got a 6 pack of marimo moss balls from Amazon that have been awesome. Also, if you don't have backgrounds on your tanks they are cheap there and are a great addition. I love the plain black background to hide all the cords and tubes, plus the fish REALLY stand out against the black (unless you have dark bettas, then maybe try the blue).

 

A bigger tank

 

Okay so I think i'm going to get:

• API master test kit
• Black backrounds
• extra API test tubes
• Mario moss balls
• 100 watt adjustable heater (for the only betta tank)
• 2 Filters

I wish I could get a bigger tank or even just another one but I can't
Thank you for all the idea's