Drop Checker.... - The Planted Tank Forum
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post #1 of 32 (permalink) Old 10-17-2007, 06:22 AM Thread Starter
 
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Drop Checker....

I was just curious if anyone has a good accurate drop checker that they would reccomend....

Also, the only one that my lfs stores sell is a Red Sea Drop Checker... anyone have any experience with these?? Work well??

Thanks in advance,
-Jessica
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post #2 of 32 (permalink) Old 10-17-2007, 06:33 AM
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A drop checker is only as accurate as the solution you use. Otherwise, they're all the same.
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post #3 of 32 (permalink) Old 10-17-2007, 06:53 AM Thread Starter
 
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well, which solution should i use? Should I just go ahead and get the red sea one that my lfs carrys?

should I get this one?? https://www.plantedtank.net/forums/sw...-checkers.html

But towards the end of the thread on that one, there is a mixed review.

I'm just not wanting to waste my $ so I thought that I would post this thread and see what a few people have to say...
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post #4 of 32 (permalink) Old 10-17-2007, 07:12 AM
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I'm sure any drop checker works the same as long as you don't like break it or something like that.
http://liquidarthome.net/khstandard
And epic is talking about this. As long as you get 4 dkh water in your checker, should be all the same.
Ask blacksunshine if he includes some or not, I tihnk I might've read he did.

Last edited by gotcheaprice; 10-17-2007 at 09:39 AM.
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post #5 of 32 (permalink) Old 10-17-2007, 08:20 AM
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post #6 of 32 (permalink) Old 10-17-2007, 09:33 AM
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Thanks epic! I'm gonna try to do this at my school. I think my teacher will let me, lol, but dunno if she likes me that much, not doing as great as I want to
Using that calculator, it said that I would need 1.0 G of baking soda to raise 1 liter to 4 dkh. Can I just do that instead? My school has scales to the hundredths.
Would this not be a lot faster? Or does it become less accurate?
Or use 1.2 g for 1 liter which I'm going to do.
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post #7 of 32 (permalink) Old 10-18-2007, 12:25 AM
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I used the instructions by billionzz that epicfish is showing when I made my 4 dKH solution. It's easy to do.

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post #8 of 32 (permalink) Old 10-18-2007, 01:22 AM
 
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Quote:
Otherwise, they're all the same.
Well, in my experience they're not all the same. I've tried three different designs now, and they differ in the how quickly they react to changes in the tank. I believe it has to do with how much surface area there is at the two air-water boundaries - more surface area allows the checker to come to equilibrium with the tank more quickly.

I'm sure the size of the "bubble" between the tank water and the checker solution (small is good), and the amount of solution in the checker (less is good), also affect how quickly it reacts to changes.

Having said that, I've used the Red Sea checker, and it works well - reacts pretty quickly to changes. I used it for several months and had no issues with how well it worked. I just didn't like the look of it in the tank, so I replaced it with one of those ADA knockoffs from eBay.

Regards,
Mike
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post #9 of 32 (permalink) Old 10-19-2007, 04:37 AM
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http://cgi.ebay.com/100-Gram-X-0-01-...hippingPayment
I was thinking of buying a scale accurate to the .01, but it seems like they're all above $80. Any idea if this one is accurate? Thanks.
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post #10 of 32 (permalink) Old 10-19-2007, 05:00 AM
 
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Scale

You can go with normal cheap kitchen Measuring spoon. And for the smallest dose you can go with mini measuring spoon like these.



http://www.kitchenkrafts.com/product...cd2=1192766298

All that under 10 dollars and really precise.
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post #11 of 32 (permalink) Old 10-19-2007, 05:04 AM
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Well, I was going for measuring the mass, not amount. I think I might just go to my schools bio lab to do it then. They look pretty expensive
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post #12 of 32 (permalink) Old 10-19-2007, 06:52 AM
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Quote:
Originally Posted by gotcheaprice View Post
http://cgi.ebay.com/100-Gram-X-0-01-...hippingPayment
I was thinking of buying a scale accurate to the .01, but it seems like they're all above $80. Any idea if this one is accurate? Thanks.
Buy It Now Price: US $9.99 Shipping $11.99

You need to read it again. $80 is the list price.

That's an excellent scale for $22.

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post #13 of 32 (permalink) Old 10-19-2007, 08:30 AM
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Well, they say list price is $80, but you never know if you can find these things for like $10 in china town or something. I was thinking of using this for ferts, but my mom does have a jewelry scale accurate to .1, so I might just stick to that, and my schools for the dc fluid. Unless this thing actually is accurate, which I'm doubting for some reason.
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post #14 of 32 (permalink) Old 10-19-2007, 08:43 AM
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Quote:
Originally Posted by gotcheaprice View Post
Well, they say list price is $80, but you never know if you can find these things for like $10 in china town or something. I was thinking of using this for ferts, but my mom does have a jewelry scale accurate to .1, so I might just stick to that, and my schools for the dc fluid. Unless this thing actually is accurate, which I'm doubting for some reason.
Just because it's from eBay doesn't mean it's not accurate. And how do you know your mom's jewelry scale IS accurate? =p

Find a standard weight and see if it matches up. =p
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post #15 of 32 (permalink) Old 10-19-2007, 08:56 AM
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lol, true But my mom bought hers for $100, lol, and it's japanese!
I guess I'll just buy that and the standard 100g weight thingy and test them at my schools scale and then mine.
But my mom also said she has a a new one she hasn't used yet, so I'll see if that's accurate to the .01
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