All ISTA Aluminium Cylinders are refillable at your local aquarium shop or fire extinguisher refilling centers.
ISTA is one of the most reliable product and attraction is the Aluminium Cylinder in this kit which will not rust. However the timer supplied along with the product is not having a backup battery which is the only inconvinience and you have to make necessary alternative option. Other wise product is very good and reliable..
super recommend for all easy to assembly and use great results
excellent product.. timer is not worthy
Superb product delivery was quick and also it was easy to setup. The only issue is with the timer it resets if the power goes of and u will have to reset it nRest everything is perfect