Are all API test total junk?

frantz

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I know I should just toss em, but I hate to see the waste. I do my nitrate test with Red sea but otherwise I'm still using API. I use a syringe for measuring to remove that variable but I don't know if I'm doing something wrong. I've been using Seachem's reef buffer to try and raise PH but it stays at 8.0. I add 1 or 2 gal of RODI water daily for evap and do weekly water changes of 5g (180g total system). My cal is showing 440 and hardness of 13 but pH stays right at 8 (or lower!). What makes API junk anyway? Sorry I realize this is like 2 threads in one but thanks for the thoughts!
 
I would chunk them all, however, Calcium is prob accurate enough....
 
I don't buy into all that, actually. I haven't tested my water in months. I just do water changes regularly and don't dose a thing. I have mostly softies and LPS though.
 
I agree to an extent tex, there is alot of snobbery in expensive toys. I first became more concerned when my nitrate registered through the roof on API but nearly 0 on Red Sea. Most of my SPS has done well, but it hasn't thrived. I think that may be where the difference is. The folks that get the best growth (good for trades) have better water parameters, and I'd like to get to that point. I'd be curious if anyone with a chemistry background could offer an explanation about why API test arent as good. Heck, I have no clue how any of the water test even work.
 
The general consensus is that they're 'ballpark' tests. Good enough for a general idea, but not reliable enough for precision.
 
If, at any time, you used the nitrate test without shaking bottle 2 it is worthless from then on. Think of vinegar and oil salad dressing. Don't shake, pour some out and you have a totally different concentration that will give you false readings.
 
Really all test kits are junk most are off or old by the time you git them they mainly just give you a rough estimate to go by
This may help more then test kits
Alge bloom, glass covered,hairalge, phos is high
Fowl odder from the tank ammonia
fishy odder Browning of sand nitrates are up
Cal or alk won't buffer right mag is low or nitrates are high
Sps brown or won't grow low chemical balance wrong(cal,alk,mag) light (blue light is for color white is for growth),to long of a photoperiod (causes the alge in the corals to git to hot lowering the ability to grow they have to cool down before they start growing skeletal mass phosphates , not enuf flow or to much and the list gose on
 
McPhock;780481 wrote: The general consensus is that they're 'ballpark' tests. Good enough for a general idea, but not reliable enough for precision.

+1

My thoughts as well.

Everyone's "first" test kit I suppose. I would slowly start replacing them with more proven accurate kits. Unfortunatly the best ones are pricey.
...but then, isn't that the case with everything?:yes:
 
I've found their calcium test to be accurate when I've compared it head to head with others. That is the only one I'd use.
 
McPhock;780481 wrote: The general consensus is that they're 'ballpark' tests. Good enough for a general idea, but not reliable enough for precision.

Isnt that true about them all? All test kits are consumer grade products with consumer grade results, not professional lab grade. Try taking three tests with the same kit of your choice. I'm sure there will be some variation in results.
 
I think API is fine, and if used properly and consistently you can monitor changes in your tank as effectively as any other test kit will accomplish.
 
Most of you have had my general thoughts. I had considered the lack of shaking to change concentration, but I do shake it (though I count slowly to 60). I was a radical change though, for a long while it read as fine then all of a sudden my next test showed bright red.

Anyone have a good chemistry book suggestion on how water test work? (not looking for a web site, I want a nice hard bound reference)
 
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