Red SeaReef Colors Pro Multi Test Kit - High Accuracy Iodine, Potassium & Iron Tests for Reef Aquariums - 140 Tests, Essential for Coral Health

I rely heavily on RedSea products, especially for testing. The packaging and testing products are of high quality. Their instructions can be intimidating & not beginner friendly, but you do get used to them after a few times of testing. There are many helpful videos and instructions online from reefers that could walk you through it as well. I purchased this 'advanced' test kit because I dose the RedSea colors ABCD supplements and need to know my tanks parameters beforehand. The potassium (K) test in particular is time consuming and difficult. Out of the 3 different RedSea test kits I own, the potassium one in this kit is the only one where the instructions not only take up the whole front side of the card, but continue onto the back too. The back is usually where you'd compare the color/chart to find your level. I hope they can develop a more user friendly approach with this test in particular. Other than that, I highly recommend their test kits.

4 stars for the 2nd kit that arrived today. The first one that was shipped had obviously already been used. All bottles were opened, things were missing, etc. Of course Amazon handled it well - sending out a replacement right away.The Potassium and Iodine tests are certainly more complex than the usual suite of reef aquarium tests we do, but not horrible. If you plan to supplement any of these things, you simply must be testing before and after.Red Sea Pro test kits are wonderful - high quality products in nice cases & durable instruction cards.This kit does what I needed. I learned that my K and Iodine were right on but Iron undetectable. So instead of buying all the Coral Colors supplements I may only need one.

Buy a lab coat to go with this kit. Pain in the rear to test and read. Color chart for comparison you have to have super vision to tell apart. Went online and read up on it and not one person recommend testing and dosing it. Sometimes doing less is more for reef tank. Learn it the hard way, so please don't follow my dumb mistake and save the time enjoying your tank from your couch.

Started using the colors program from Red Sea and needed this to test my levels for dosing the components.. Works as described and Is a top notch high quality product.. The whole Red Sea line is pretty amazing if you want your corals to Pop with color.

I ordered the Red Sea Test Kit in January 2023. All of the reagents in the kit will expire in September 2023. There are 50 tests in the kit. If I tested once a week, the reagents would be expired in 32 weeks, thus I have wasted my money on 18 worthless tests, that's 36%. Do yourself a favor and do not order any water test kit online. Go to your local aquarium store and look at the expiration date before you buy. Some kits have an expiration date good for three years or more. I got burned on this one, but I have learned a valuable lesson.