henward Posted January 22, 2013 Report Share Posted January 22, 2013 http://www.ebay.com.au/itm/Digital-pH-M ... 27cf11efc7 http://www.ebay.com.au/itm/Digital-pH-M ... 3f0dad6cf1 the second one can be calibrated, its for hydroponics, is this able to be used constantly, so always on and always in the tank? the probe i mean. of course every so often i will re calibrate it. or if anyone can recommend a product on ebay/trademe, that would be great thanks Quote Link to comment Share on other sites More sharing options...
David R Posted January 22, 2013 Report Share Posted January 22, 2013 I imagine with that sort of thing you get what you pay for, so going for a decent brand. Quote Link to comment Share on other sites More sharing options...
henward Posted January 22, 2013 Author Report Share Posted January 22, 2013 I imagine with that sort of thing you get what you pay for, so going for a decent brand. Haha ok... what is a decent brand? :dunno: on the auctions, i see ones that are 88 dollars, looks pro! power plug for mains power, no batteries, but the PH range seems to be less than the cheaper ones. you also get cheaper ones that have replaceable sensors. Quote Link to comment Share on other sites More sharing options...
henward Posted January 22, 2013 Author Report Share Posted January 22, 2013 http://www.ebay.com.au/itm/310183989931 ... 97.c0.m619 this looks quite good. seems to suit what i need. i want a constant display of PH not a controller, i dont need that - but in saying that, if i hads a PH controller and wanted to bring PH up, what chemical do you use in a doser to do that? just curious, its over kill for me so wont do it, just wondering but yeah, this unit, feedback, seems like a pro unit! Quote Link to comment Share on other sites More sharing options...
Godly3vil Posted January 22, 2013 Report Share Posted January 22, 2013 If you are that worried about ph swings Henward I would consider setting up a ph controller, they run off co2. Most people use them for planted tanks but I don't see any reason why you can't use it in your tank to control ph. I may be wrong though. Quote Link to comment Share on other sites More sharing options...
Godly3vil Posted January 22, 2013 Report Share Posted January 22, 2013 American Marines make a good quality ph monitor specifically for aquariums Henward, I know someone who has one for sale if you are interested? Quote Link to comment Share on other sites More sharing options...
henward Posted January 22, 2013 Author Report Share Posted January 22, 2013 so adding co2 will increase ph my pro\blem is keeping it higher, ph naturally winds down what can i use to bring it up with a controller i was going to just use oyster shell and add slowly untill the balance is right, so needikng a ph monitor really to get a 'live' reading... i can measure ph bu with drops, its a pain Quote Link to comment Share on other sites More sharing options...
Godly3vil Posted January 22, 2013 Report Share Posted January 22, 2013 Oh, no co2 would drop the ph it can't raise it. Sorry Henward Quote Link to comment Share on other sites More sharing options...
henward Posted January 22, 2013 Author Report Share Posted January 22, 2013 I am told that many occasions the chips in them are identical. but should i get the HANNA brand - or weipro from a TM seller? how is a weipro in term sof quality? http://www.trademe.co.nz/pets-animals/f ... 579639.htm Quote Link to comment Share on other sites More sharing options...
henward Posted January 22, 2013 Author Report Share Posted January 22, 2013 http://www.trademe.co.nz/pets-animals/f ... 579573.htm or this Quote Link to comment Share on other sites More sharing options...
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