Tetra CO2 Depot, Intensive CO2 Supply for lush Water Plants, 11 g

This canister does exactly what it is designed to do, provides Co2 to a fish tank. You must have the starter set (the tube and disposal unit - sold separately) to use this correctly.I have a 190 litre fish tank and this Co2 canister compliments the plants well.Once you have purchased the starter set it takes seconds to set up. Simply attach one end of the tube to the canister and the other end to the plastic disposal unit. Put the plastic disposal unit inside the fish tank and attach to the side of the glass using the supplied 'suckers'.Make sure the disposal unit is the correct way up (the side which the tube connects to is the top side and the completely open side is the bottom side). Tilt the unit slightly to the side to remove any oxygen and allow it to fill with water and tilt back down again. From here slowly press on the canister to release Co2 into the disposal unit and keep releasing until the Co2 fills the disposal unit towards the bottom, don't allow any Co2 to release into the tank, just towards the bottom of the unit.That's it, it takes a matter of seconds. Throughout the next few hours you'll notice that the Co2 releases into the tank and leaves the disposal unit. Once the Co2 has completely gone you can press the canister again to release more Co2 into the unit, again watch the disposal unit until the Co2 is near the bottom and stop.Over a couple of days or so you will notice a build up of gases towards the top end of the disposal unit which will not go. Simply tilt the unit to the side to release these gases and you can start again.Only pump Co2 during the day whilst the lights are on otherwise it's wasted as the plants will sleep at night. I pump Co2 approximately twice a day, morning and afternoon.Remember aquarium plant food will still be required as the Co2 only lets the plants breath, it does not provide food to the tank.Using the Co2 canister twice a day will last approximately a month and will then need replacing again.I hope this helps.

product as described. well packaged and seems to work well

I use them all the time as it nice and simple and my plants are doing really well

perfect

All I received was an empty canister, truly empty.I'm unable to return as I'm disabled.

Very primitive device. Just to let think you are using CO2 system.

Bought mainly to help control algae, has given the anted aquarium a decent boost aswell, air stone on overnight and co2 on a morning before turning on the lights to give the plants a decent start. Works well and seems to have an impact on the algae aswell which is what I bought it for

good item but coudl be cheaper