need recommendation for solenoid and water test kit
I have two questions for everyone. The first is what do you guys recommend for regulating CO2? I have my lights on a timer but I have to close the shut off valve for the CO2. This isn't a big deal BUT sometimes I forget to switch it on or off...then I'll have CO2 running all night or not at all during the day. It's not often but it still happens. I saw that Archea has a few options and also ADA has the EL-valve. I'd love hear what works well for you guys.
My second question is what are you guys using for testing water conditions? I'm using Mardel test strips where you match the colors. When I read posts about water conditions people are throwing out numbers. I'd like to be a little more accurate when testing the water in my aquarium, instead of "Oh my alkalinity is neon green...or maybe it's more of a florescent yellowish green". I just feel like there's a larger window of error. Let me know what you recommend.
As always, thanks for taking the time to read and respond!