1. DeNovice

    Will chaeto drop nitrate and phosphate to zero?

    I have been consistently getting 0 on Nitrate and Phosphate. I have chaeto in a back chamber that’s literally doubling in size in about a weeks time. I give it 18 hours of light which I’d read was recommended. I also have green hair algae forming on the sand. As of yesterday, my ammonia level...
  2. E

    Alkalinity help please

    So I’m confused and need some help I have a mixed reef tank softies/lps and I have been testing my alkalinity each day for 7 days to try and figure out how much to dose each day, I am using the Hanna alkalinity checker so it’s pretty accurate, my problem is it’s staying the same I have no drop...
  3. ConnivingPigeon

    Is Phosphate important to test?

    Hello, I was gifted a well-established reef tank back in december (3 fish, some soft coral and a war coral), and I've been trying to learn as much as I can about the hobby to try and keep everyone alive. I bought the red sea marine care and fundamentals multi-test kits, and neither of them have...
  4. arussellnsg

    Discrepancy in ATI ICP vs Home test

    Is this even possible? I have a discrepancy that I'm trying to wrap my head around. I did an ATI ICP and got my results back. It says my salinity is 45.69 psu. My IceCap digital, calibrated with 35ppt, reads my SpG at 1.022 My fish are fine, my soft corals and some acans, candycane are...
  5. dyerrm

    Colorado Testing Apogee MQ-210 w/ wand $350

    I have a, used twice par meter. Pretty much new. Original packaging Selling for what I bought it for $357 Comes with wand. Shipping included.
  6. B

    Top Three Parameters

    Today I came across a YouTube video... I know,I know, don’t trust YouTube vids. And that is why I’m here asking. The video claimed you really only need to test Temp, Salinity, and PH. What are your opinions on the top, or most important parameters to test?
  7. MarshallB

    RedSea foundation pro test kit issue

    I'm not sure if this the appropriate forum for this, but oh well. Has anyone had experience with this test kit? I'm wondering if I'm just unlucky or the equipment in this test kit is just junk. I've had this kit for about a month now testing DKH every day. I've noticed the markings on the...
  8. Alex C

    Idaho Testing Miscellaneous Milwaukee MA887 Seawater Refractometer

    Like new digital Refractometer, comes with original box and RODI/sea water standard samples for calibration. Works flawlessly just no longer need it as I’m no longer in the hobby. Asking $105 shipped.
  9. M

    Which hanna phosphate checker do you use? And which should I use? HI774 vs HI713 vs HI736

    I'm a bit overwhelmed by the number of Hanna Checker for phosphate. I've opened a poll to see which one you guys use. Could someone correct me if my understanding of these three checkers is wrong? And maybe suggest which one I should get? The HI774 sounds like the best choice for someone who...
  10. kiddkobireefs

    Cycling Help?

    Went to my LFS about 2 weeks ago. Ammonia read 0 pmm. Nitrites read .50 ppm. Nitrates read 0 ppm. My LFS advised to start dosing Seachem Stability. They advised me to do once dose and . let it go a week and currently my readings are: Ammonia: 1.0 ppm Nitrite: 1.0 ppm Nitrate: 10 ppm Is this...
  11. JAKos

    Testing & Dosing

    So i'm just getting into the world of testing and dosing, how often should i be testing for alkalinity calcium and magnesium as i'm starting to dose. should i be testing weekly? any info would be helpful :)
  12. Test Kits Using Phone RGB - Color Blind Testing Aid

    Test Kits Using Phone RGB - Color Blind Testing Aid

    Hi all. I've been a long time lurker getting lots of useful info off the forum to set up my first tank. I got some personal help last week with a fish diagnosis so I was looking for some way to give back to the community. I am color blind which makes reading most test kits impossible. I have...
  13. breefrost

    Maximum nitrate levels

    What is the maximum nitrate reading you know of where corals were kept successfully? What is the “breaking point” for the hardiest of corals? What corals are the most tolerant to high nitrates? Please input especially if you have large predatory fish! Thanks!
  14. K

    Illinois Aquariums Aquarium Controller Powerheads Sumps Getting out of the hobby - lots for sale

    Hi everyone, It pains me to say this but I’m getting out of the hobby for a while. I planned to finally set up my dream tank last year, but work + life has kept me super busy & I haven’t had the time or energy. Now, I’m buying a home and am going to be spending the next year doing renovations...
  15. Ryan Wolf

    Texas Aquarium Controller Brand New Neptune Trident, In Box (just pay what I paid)

    I have a new in box, sealed, Neptune Trident that I won’t be using. Just pay what I paid ($644.59 w/taxes, see receipt) plus $50 to ship. Done! Hope someone who needs one gives it a good home. I can ship Saturday morning if paid in full tonight (6/26)
  16. LxHowler

    Help with red sea nitrate test

    So I have been using a API nitrate test since I first started my tank, it has seemed pretty reliable but it has just run out so I thought id try the red sea pro test, bought the kit with phosphate aswell. The issue I'm having is that the API test was saying my nitrates are at 10 but I've just...
  17. KeystoneMalone

    Baseline Parameters

    R2R Community- How do you establish baseline parameters for your reef to really see how much calc/alk/mag your corals are using? I test once a week, but it seems as though numbers can jump around a little. Ive also never tested right after a WC to see what the numbers are once elements have...
  18. Reeferburns

    My calcium levels high

    Hi, I’m wondering if 490ppm and 9.6 dkh is bad or good? Do I need to try and lower my calcium? Also how do I maintain my alk level at 9.6.
  19. Rick Mathew


    SAMPLE STORAGE AND ITS IMPACT ON PHOSPHATE MEASUREMENT In a discussion on R2R @BigJohnny posed a question about why his Hanna ULR Phosphorous test results were significantly higher (2-3 times) than his ICP test results…. Here is a link to the discussion...
  20. esther

    Testing, Testing . . . 1 2 3

    OK, so it's water test day... Wondering what you all make of these numbers (keep in mind we did all tests twice, just to be sure). My biggest issue is Alkalinity. We're going to retest today after we recalibrate our KH Director to see if it ends up closer to our Hanna tester. Which ones do we...
  21. dtruitt

    What chemicals / concentrations are used for standard test kits?

    I'm a controls engineer by day, so I've been musing about making a DIY Trident / Reefbot automated test system in my spare time. My willingness to embark on such a project is dependent on the availability of affordable reagents, and preferably reagents that dont need to be vigorously shaken...
  22. nickkohrn

    Trident Owners - Do You Still Test Manually?

    Question: If you own a Trident, do you still perform manual tests with the test kits that you used prior to acquiring a Trident, such as Salifert, Hanna, Red Sea, et al. Why do you, or do you not, perform manual tests? I tried searching for threads that involve discussions about whether Trident...
  23. Peach02

    Apex Questions

    Im researching a new tank and looking into a controller that can - have a feed mode, matinance mode and power outage mode at the press of a button or ideally from my phone (iPhone 8) - moniter pH, salinity and temperature - turn off various hardware remotely - automatically top up the tank -...
  24. ChronosReef


    Howdy everyone, my love just got me the new apex system and a new trident :)!! So i'm selling my kh director I purchased Jan 16'th of last year so still under warranty. Everything works great, includes Kh director, Stand alone GHL doser all cables and half a bottle of 1000ml reagent. 600...
  25. AquaLocker

    RAFFLE PRIZE Hanna HI98319 Salinity Tester Giveaway (no purchase necessary)

    No purchase necessary, but lots of ways to enter - for R2R members only! One winner only. The winner receives a new Hanna HI98319 Salinity Tester Learn more about this product here: Ways to be entered: PLEASE post in this thread when you have qualified for any entry in any category below...