HANNA HI 98129 Waterproof pH/EC/TDS/ºC/ºF Combo Tester it's the black one
what you guys think about this product is it better to buy it separate or 3in1

hey felix, i have one. things always clipd on when i walkinto my gr.
its a great tool. mosdef not a KEY part to sucess, but its frign convenient
plus. i keep monster fish, so even take it to the fishroom makes ph and temp checkin a breeze.

if u got the grows in to invest in new toys. go for it. even blind i use perfect

depending on your setup, you might find if your running E&F or anything else with a decent res that a continuous tri-meter would work best. I walk into the room at anytime and just glance down and see temp/ph/ppm at any given time and never open a tent/cab so can even see what going on when lights off.

Never thought about that. You can check everything and not even have to bend over! How much?

the tri meter are usually between 200 -300 bones.hanna also make a tri meter.personally i prefer to use differnt meters when it comes to hand held pens.if some thing happens to your ph probe like u smash the lense then the meter is fucked until u get a new one. but if u have a seperate system u can still test ec/tds/ i have a hannah red pen ph and a hannah tds.personally i think there fine for ph but i wont buy another tds meter,once i get some cash im switching to the oakton testers.

whats so good about oakton? is it cheaper or better, cause i heard someone say it was pretty good

Mine was like 150 or so from nehydro.com

design,quality,accuracy. plus its just something new to try out.ive had my hannah for 2 years and would like 2 try a new piece of equipment

what about a oakton waterproof PTTestr 35(pH/TDS) its new and i found one online for $112.00 plus SH
i'am thinking about getting this one what you guys think
so is hanna better or oakton

HANNA HI 98129 Waterproof pH/EC/TDS/ºC/ºF Combo Tester
or
oakton waterproof PTTestr 35(pH/TDS)

cause i just want a pen to read tds(tds is ppm rite like 200 or 1400 ) i dont want the two numbers like 0.4 or 2.8