Adding EWC to my soil mix

Hey so my EWC just came in, I dident plan on getting it but i did, after i already mixed my soil...
66% ffof and soil mix and 33% perlite- probly alittle more perlite..... I only baught a small 4.5lb bag..
How much of this stuff am i really to use.. I still have my 4 13 day olds in party cup.. can i top the soil with some EWC. or wait till i transplant them 2 my 2gal pots. The bag mostly says 1 part ewc and 3 soil... should i use that part %? --- since my soil is already mixed theres no way for me to really know how much i need 2 put in is there??? Or is there without adding to much or to little?????????

Please and thank you

Use 1 part EWC, 2 parts FFOF and 1 part perlite. Be careful about adding any extra nutrients to your soil for the first few weeks, because a good EWC can easily cause excessive salt build up in your medium.

been using organics and ewc for years never had a salt issue as that's synthetic not organic unless you go crazy with Epsom salt will be ok

Zheol said:

been using organics and ewc for years never had a salt issue as that's synthetic not organic unless you go crazy with Epsom salt will be ok

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I meant synthetic nutrients. If you've been using it for years, you should know that EWC contains worm mucus which prevents nutrients from leaching out. Also it's important to not mistake EWC and vermi compost for each other, because most of the products that are being sold as EWC are just actually vermi composts.