Re: [APD] My tank water doesn't match the tap water

[Barry Anderberg <apd at swoobs_org>]

Anyone?

Barry Anderberg wrote:
> I noticed that my tank water's KH is 24 dH and my tap water is 20 dH.
>
> Another thing I found was that my tap's pH is about 7.5 meaning I have 
> about 19 ppm of CO2 right out of the tap.
>
> Putting the water in a bucket with an airstone for a few hours confirmed 
> this as the pH of that water went up to near 8.0.
>
> I have nothing in my tank that would contribute to carbonate hardness.  
> At present it contains silica sand, three pieces of driftwood, four fake 
> plants, and a crappy "Whisper" brand heater which seems to have melted 
> some of the silica sand when it was closer to the bottom of the tank.  
> How that's possible at 80F is anyone's guess..
>
>  I guess I would like to know if others routinely experience a change in 
> KH from tap to tank, what could be causing it, and also if it is 
> possible and/or common to see 19 ppm of CO2 in tap water.
>
> Thanks.
>
>
> Barry Anderberg wrote:
>   
>> I am amazed at the fact that we are able to send human beings into outer 
>> space, split the atom, and uncover the secret laws of the universe, and 
>> yet we cannot figure out why algae grows or doesn't grow in a planted 
>> aquarium.
>>
>> I find that a little hard to swallow, especially given all the people in 
>> the world with degrees in botany and plant biology, etc., etc.  People 
>> in the planted tank community may not have unraveled the mysteries of 
>> algae but I'm pretty sure someone somewhere knows exactly what makes 
>> algae grow, or not.  I think.
>>
>> -Barry
>>
>> Liz Wilhite wrote:
>>   
>>     
>>> On 1/29/06, Jerry Baker <jerry at bakerweb_biz> wrote:
>>>   
>>>     
>>>       
>>>> S. Hieber wrote:
>>>>
>>>> Agreed. The fact that there are so many ways to successfully grow plants
>>>> says to me that there is a lot we don't know. There is an objective
>>>> truth out there -- a recipe guaranteed to grow plants well and algae not
>>>> so well. The problem is we don't yet know enough to say exactly what
>>>> that recipe is.
>>>>     
>>>>       
>>>>         
>>> I disagree.  I think there are many recipes out there for what works.  There
>>> are many balance points.
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>>>     
>>>       
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>>   
>>     
>    
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