threeputt, if you look at the users guide, there is no indication of a series configuration.
Will "likely" be ok.... just no data yet. Right now doesn't state it's improper use, but if you set 8 of these up in a row, them completely block off flow, your just asking for it.
With MKII you can use frequency monitoring- to check pump, however be sure your fan port can handle up to 6 watts per pump. If your concerned, you can wire power direct, and tap off frequency gen line (yellow one).
We are updating the user guides this week for the MKII.
Yes, new products OTW, first we will be shipping a cheap "rebuild" kit for the MKII (should be around 10-12$), which replaces the whole center section (motor, impeller,seal)
The reason for this is simple....people want to experiment
Get alot of "what if I try this" emails, for which we often honestly tell them, "we don't know, and therefore can not warrent your idea". This way they can try, and if there is a problem, they have a back up and only take a few minutes to install.
**Note you can not order 100's of these for your own case, it's meant to help our current customers.
As for additional products, not sure I can discuss it openly, so I shouldn't.
YES most OEM orders have been shipped, or soon will be
MKII looks like MKI, about 0.100" bigger.
You can check WEB site if you wish.
As for when / who has stock, can't say, thats up to them.
As for C-Systems, production has increased considerable, however there are big happens with parent company (AVT International) which will likely see a seperation, so don't freak out if you read something somewhere, this should not effect you guys.
Sorry, will be away for awhile as stated earlier, hope this helps.