Fish aquarium accessories in Vanier, Ontario for sale

Hi,
I am selling pretty much everything you will need for an aquarium.
My cat found a way into my close aquarium and killed my 3 fish, I will not be getting more fish to put in danger.
Everything has only been used for about 1 week.
Everything was bought for a 20 gallon tank and platties (size of fish).
Everything has been rinsed thoroughly, is in great condition and ready to use.
The filter cartridge should probably be changed.
Instruction for filter, heater, air pump, water changer and water test kit is included.
Instructions for conditioner and food is on the bottles.
Everything together cost about $320 + tax, I am asking $280 for everything.
Listed below is everything you get:
1 fake plant
Bubble decor/hideout with air pump & tube
2 decor/hideouts
Almost full bottle of food
Net
Heater
Filter
50lbs of Gravel (about 10lbs not used and the rest rinsed very well)
Bottle of Conditioner (80+ml left)
Water test kit (used once, over 800 tests)
50' Water changer (used once, attaches to sink for easy water changes)
Jessica