Monster of a calcium reactor. This is 3 ft tall. Eheim pump. Media is still good in the reactor and will come with it. The only issue is the drain plug was missing and I never got around to ordering the correct metric fitting. electrical tape has worked fine for 3 years. If you have a large system, this is the key. eliminated dosing and had all my corals looking excellent. it does take some time and effort to get dialed in, but well worth it. $300