I have decided to take the plunge and build my own regulator for my planted tank. I have put an offer for a Harris 402C and hopefully I can snag it up. Now I’m trying to get a burkert 6011 solenoid for it but the burkert website has 69 models for their 6011 line. I have tried the aquariumplants.com route but it appears they no longer sell the 6011s. Does anyone have a suggested model number or website that sells an appropriate model? I’m also looking to get a type 2507 cable plug for the solenoid as well.