- Red Sea Phosphate Pro (PO4) test kit
High phosphate levels will slow coral growth by preventing skeletal growth and feed algae growth. Maintaining ultra low levels of phosphate will increase coral growth and help prevent algae outbreaks.
Phosphate Kit includes:
- 100 tests
- Easy-to-use, colorimetric comparator
- Affordable reagent refills
Red Sea produces an algae management line of test kits including nitrate and phosphate test kits. Providing an accurate measurement of these elements allows for proper dosing and control of algae nutrient levels.
Red Sea Phosphate Pro Test Kit Includes:
- 100 tests
- Accuracy: ±0.02 ppm
- Range: 0-5 ppm
- Test Type: Color comparator
- Affordable reagent refills
A successful coral reef aquarium depends on how well you maintain the water parameters which are the key to a stable coral environment. Using Red Sea test kits will allow you to accurately measure these levels and guide you on your path to reefing success.
Test Kit Accurate but has issues By David on 12/17/2019David would recommend this product to a friendFirst off, I'd like to mention that I had a similar issue - years ago - with this test kit always reading .08 PPM. I contacted Red Sea and they sent a replacement, which was accurate.
Overall, it has been the most accurate hobbyist test kit, for PO4, that I have used, over the years.
About a year ago Red Sea made an "improved" version of this kit. Here is my review of the current kit:
Similar to the older it gives reasonably good results at the high end resolution.
However the older version went up to .64 PPM while the current kit's upper limit is .16 PPM. This makes it easier to determine a result in that range, but if your PO4 level is higher than .16 you will not get a result unless you dilute the sample (I'm assuming you can do this).
So if you want an accurate high end test kit for PO4, the Red Sea would fit the bill.
However, it comes at a cost:
1. Yes; it is expensive.
2. It can be messy. The older version had two reagents that came in dropper bottles that were easy to add to the sample.
But for some reason the current kit uses a flimsy pippete to extract the 2nd reagent.
When you remove the pippete
from the bottle some of the reagent can spill from the pippete.
To avoid staining something valuable I would recommend placing some newspaper under the pippete.
3. After adding the reagents it takes 15 minutes for the sample to reach full coloration.
Great product! By Omer on 4/22/2019Omer would recommend this product to a friendIf you’re reading .08, do as the instructions say and look at the opposite end of the black vial holder where it has the arrow type shape on the end, that is your actual reading. I check this with Hanna and it’s pretty darn close. I wouldn’t say it’s even worth spending the time on the redundancy.
Good Test Kit By Mark on 3/8/2019Mark would recommend this product to a friendGood test kit to check your phosphate levels to keep your tank in check
Highly accurate By Gavla2383 on 1/30/2019Gavla2383 would recommend this product to a friendOk I had an issue with this test kit where it would constantly read 0.08 no matter how or wen I tested the water... it wasn’t red sea’s error, however it was mine and I guarantee others will have had the same issue!... like other test kits I would match the colour of the sample to the chart and take whichever colour best matched as the reading, however after some time I decided to fully re read the last few points on the instruction manually which tell you that the point on the opposite side of the plastic vial holder is your true reading!!..... this threw me as 1.i didn’t clearly read the instructions fully and 2. I just assumed the test kit worked the same way as most others, I was wrong... it was my error not red seas error as the instructions are quite clear!!.. I’ve since bought a hanna checker and this kit is accurate compared to it!..
Good results By Kscope on 4/27/2018Kscope would recommend this product to a friendI've been using this about 3 month doing weekly tests. Yes like others have said the colors on the wheel and sample are a little off, but many test kits are that way. Although It is still easy to figure out where it is reading. Much easier to use than titration kits. All results are about the same as my Hanna Checker.
Like they say, don't waste your money By Aaron on 3/3/2018Aaron wouldn't recommend this product to a friendKit arrived with test color charts and instruction all nasty with leaking reagent. I had to rinse and dry everything out, but the color stains remain. Test is very complicated and results are hard to read.
I don't have the problem other users seem to have and matches Hanna ULR closely By jmfugett on 5/7/2017jmfugett would recommend this product to a friendI use the Hanna ULR and this kit to check PO4. I started with the Hanna and was frustrated because the test-retest reliability is very poor for me and I end up taking three readings and averaging. The Red Sea is actually easier to test with fewer steps. The color wheel at the low end is very tricky to discriminate the colors, but with some practice works well. I am still trying to find the correct lighting for accurate color reading. When tested with the Hanna the readings are almost identical. The Red Sea does not distinguish measurements as finely as the Hanna as the color variations double the readings with every change in hue (e.g. .0, .02,.04,.08,.16,.36,.64). If my phosphate was higher this would be frustrating to me, but at the low end, between .0 and .08 I don't think it is a big deal. An example of how the two kits relate to each other, tonight the Hanna (tested 2 times) read 0 and .01, the Red Sea was consistent at somewhere between 0 - .02, with great difficulty deciding between the two, so probably .01? At any rate, I have never gotten a reading as high as .08, so I don't know why others are having a problem with that. For me, I am very happy to have this kit and use it regularly.
I wish I could give it a .08 star By Ant on 12/8/2016Ant wouldn't recommend this product to a friendSame as the other users I cannot get this kit to read below .08. At the time I tested (and retested and retested and retested) I was running GFO and growing macro so I decided to pick up a Salifert kit and a Hanna checker just to be sure. Of course both pulled "0" readings. I usually love Red Sea stuff, but this kit is a big fat miss.
great concept, indiscernible color matching By Join the Revolution on 3/29/2015Join the Revolution wouldn't recommend this product to a friendI should of wrote a review back in 2012 when I bought this test kit but i did not. Long story short, it's really difficult to tell the color wheel from the sample-that itself, is unacceptable for me. Also, I would not mind if the test kit used so much comparative samples to accurately determine the correct end result, unfortunately, this test kit is a time waster and a wallet sink. Gen 1&2 are a total fail.
Don't waste your money, get the Hanna kit instead By Phil on 11/12/2014Phil wouldn't recommend this product to a friendI've used this weekly for the last 3 month and it reads .08 every time. I know for a fact my water is not more than .04. If anything I have a difficult time to maintain .02-.04 for sps coloration because of the reactors I'm using. Garbage test kit.
Good Product By Nick on 6/7/2013Nick would recommend this product to a friendSome of the older kits were sold with a bad color wheel. This has since been corrected. Very easy kit to use; though it can be difficult to tell the difference between the colors at the lowest of PO4 levels.
Will not read lower than .08 By TrevorJohnson on 4/17/2013TrevorJohnson wouldn't recommend this product to a friendEvery thing I have tested all read .08 .
My tank water- Fresh made salt water- Natural seawater- 0 tds rodi water.
All test at .08 and I have had 6 other people run the tests and they all get .08 also