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diablo30xp

Hanna phosphate question

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diablo30xp
, 05-16-2015 at 08:41 PM (16499 Views)
I just recieved my hanna phosphate checker (HI713). Tested my water the way the instructions said. Is it possible to have a bad reading after 3 tries? I have green hair algae growing and algae on my sand bed growing for about a month or two. Will it show any readings to measure? i want to make sure im doing something right or not. Ialso bought some phosphate rx should i still dose some to see if i get any readings after the fact?

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Updated 05-16-2015 at 08:53 PM by diablo30xp

Categories
‎ Water Chemistry , ‎ Equipment

Comments

  1. gettareef's Avatar
    I'm sorry, im a little confused; is your phosphate hanna checker giving you readings of zero? Do you know if this is the ultra low range phosphate hanna checker?
  2. diablo30xp's Avatar
    i have the low range one and yes im getting a reading of 0.00 but i know i have a phosphate problem i have algae on my rocks and sand bed and some green hair algae growing as well.
  3. gettareef's Avatar
    Hmm....just to be safe I'd check phosphate with another trusted brand test kit (salifert, Red sea, Nyos, all good brands IMO) before doing anything and so you know your actual phosphate level. It is possible that your hanna checker is faulty (doubtful) or, more likely, you got a bad batch of reagent (has happened to me before on both hanna phosphate and alkalinity reagents). If another trustworthy test kit shows a different result and your hanna checker is still giving you a value of zero, I'd write Hanna a email explaining your issue. For me they have been good in the past about sending out new reagents for free.


    If it's any consolation, I also have been getting a reading of zero phosphates from my hanna checker and salifert kit, but dosed phosphate RX anyways (23 drops in my filter sock at night in a 75gal system - would lower phosphate by 0.25ppm) bc I also had algae and just didn't believe there was none in the system. In my case there were no averse effects and corals seemed to respond positively (greater polyp extension), so I think dosing lanthium chloride (or phos RX), at least in low doses, would not negatively impact livestock in a system measuring an undetectable phosphate level , BUT to be safe I'd ask the expert, Marc. Good luck!
  4. melev's Avatar
    If you see the water clouding up when dosing Phosphate Rx, then you have phosphate in the water. It converts PO4 into a solid so it can be exported via sock or skimmer.

    I don't trust the Phosphate Checker by Hanna. It gave me high readings of PO4 coming out of my RO/DI system. Read all my tests and comments in this blog: http://www.reefaddicts.com/entry.php...e-embarrassing
  5. diablo30xp's Avatar
    ok thank you very much melev i do appreciate all responses thx again guyz. REEF ON !!!