Air tubing, mostly silicone. Lasts longer, less toxic and more flexible than vinyl. 4 mm I.D., 6 mm O.D. Price per meter.

Aquarium Tweezers

$12.99

USB Powered Air Pump

$$14.99

Aquarium Plant Holder

$$6.99

LED Grow Lamp, Standard Socket

$$$28.95

Watermelon seeds

$$4.00

Dual sponge filter.

$$12.95

Tubing Reducer Fitting 3/8" to 1/4"

$$2.75

Water Tubing Adapter 1/2" FPT x 3/8" Quick Connect

$$4.25