Hi everyone, as you can probably tell im very new to ZenCart and I'm trying to get myself a store thats up and running on all cylinders
I've been researching for an answer to my problem, and I havent come across the answer yet.

The Issue: I'm setting up a store that sells aquarium products. Now, they sell "product A" at $13.49 which treats 840 gallons of water...but they have a bigger version of product A which treats 7,680 gallons for $33.95 and they also have an even better deal where if they buy product A that treats 38,400 Gallons it cost $141.75

My Question: How do I make it so in my store, when the customer clicks on the link for "Product A" they will get a page that tells them something like this

Product A
((description and such)))

-Treats 840 gallons $13.49 -Add to Cart-
-Treats 7,680 Gallons $33.95 -Add to Cart-
-Treats 38,400 Gallons $141.75 -Add to Cart-

and then the customer can click on either one and add it to the cart...lets say they want to buy 2 of product A that treats 7,680 gallons... then the cart will automatically add up the total as $33.95 x 2 = $67.90

what advice can you guys give me on solving this problem?...I know its a big post, im just trying to explain it really clearly so I can get the help i need from the veterans out there. Thank you for taking the time to read my post. I hope you guys have an answer for me have a good one!

PS: im using the latest install of zencart