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troy77
 Post subject: low ph
PostPosted: Sep 23rd, '11, 08:24 
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hello folks

have been trying to search for an answer but my computer is playing funny buggers with me... is it ok to have a ph of 6 when a couple of weeks ago it was sitting around 8.2 fish seem to be healthy now plants are goin great guns nothin is really a problem except for ph


cheers troy
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arbe
 Post subject: Re: low ph
PostPosted: Sep 23rd, '11, 08:27 
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6 may be getting too low. I would put some shell grit in to buffer the pH.
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troy77
 Post subject: Re: low ph
PostPosted: Sep 23rd, '11, 08:31 
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cheers arbe i thought it was shell grit but couldnt find it with stupid comp... how much shell grit or doesnt it matter

cheers
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Fabian
 Post subject: Re: low ph
PostPosted: Sep 23rd, '11, 08:38 
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from what ive read it doesnt matter it stops leaching at 7.5 or something ... but i have no personal experience with shell grit
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RupertofOZ
 Post subject: Re: low ph
PostPosted: Sep 23rd, '11, 08:40 
Shell grit is a self regulating buffer... it will begin dissolving/buffering at around 6.8.... and cease around 7.2-7.4...
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iammr.bill
 Post subject: Re: low ph
PostPosted: Sep 23rd, '11, 09:16 
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Have three bags that I made out of old nylon stockings, filled with oyster shell grit to buffer my water. Just pick any place under the water inflow into the growbed where the water can flow over the bags of shellgrit. Let the system do the rest.

Attachment:
PH buffer up - Oyster shell in nylon bags.jpg
PH buffer up - Oyster shell in nylon bags.jpg [ 65.12 KiB | Viewed 1896 times ]

Attachment:
PH buffer up - growbed placement.jpg
PH buffer up - growbed placement.jpg [ 67.76 KiB | Viewed 1896 times ]


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