Those 4 week cycles will be too short to be effective. Just an educated guess, but I would recommend a minimum of 2 months per treatment (4 months for a cycle). There are a lot of people on the SRGC forum (Scottish Rock Garden Club) with experience. srgc.net/forum It is an easily searchable forum, but specific information might be lacking. However, if you ask a question, members will be happy to oblige. You have to register to post, but it is free. I could ask for you, but you may not get the answers you need because I might not ask the question(s) in the way you want.
P.S. If I initially soak seeds, I
always use distilled water or rain water (or untreated well water). All the junk they put into municipal water supplies can't be good.
