Green Planet Pro-Cal is an excellent supplemental source of Calcium, Magnesium and Iron. Plants engaged in rapid growth can often come up short on these essential elements so supplementation is a great idea. Pro-Cal is a popular choice in with plant growers.
Benefits of using Pro Cal include –
Here’s a video from Green Planet giving an overview of Pro-Cal –
Green Planet Pro Cal is available from Addloes in a 1L bottle.