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Joined: Nov 2003
Posts: 93
Lunker
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OP
Lunker
Joined: Nov 2003
Posts: 93 |
I am using liquid fertilizer 10-52-0. In the past I have been able to get the standard greenish tint bloom, but this tear my bloom is more of a tea color similar to a plankton die off after several days of cloudy weather however the skys are clear and sunny. I have a sechi desk reading of about 16-18 inches. Is this a bloom or what?
Thanks, Jake
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Joined: May 2002
Posts: 3,973
Ambassador Field Correspondent Lunker
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Ambassador Field Correspondent Lunker
Joined: May 2002
Posts: 3,973 |
Can you measure dissolved oxygen? If so check it in afternoon, report DO reading back here. Also take temperature. I can find somewhere around here a sturation chart. If at 16-18 inches if phyto bloom it will 140% or higher. I have a % saturation on my meter but this is best way to tell if color is from something non photsynthetic producing. Jake you just need to get the water solube fertilizer from us when you use the last of that liquid.
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Joined: Nov 2003
Posts: 93
Lunker
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OP
Lunker
Joined: Nov 2003
Posts: 93 |
Thanks for the info Greg, I am in the process of calibrating the D.O. meter and will post the results in the next day or two. Should I take the D.O. reading at differnt depths with the temps coresponding with those depths or just one readings and temp about 18 inches?
Jake
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Joined: May 2002
Posts: 3,973
Ambassador Field Correspondent Lunker
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Ambassador Field Correspondent Lunker
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Actually not even 18 inches. Right on the surface is what you want to measure to determine if phyto is there.
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Joined: Nov 2003
Posts: 93
Lunker
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Lunker
Joined: Nov 2003
Posts: 93 |
Greg, here are the results Surface D.O. 5.85 temp 81F 3 foot 4.60 temp 81F 6 foot 2.84 temp 79F
Thanks for the help
Jake
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Joined: May 2002
Posts: 3,973
Ambassador Field Correspondent Lunker
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Ambassador Field Correspondent Lunker
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BJ, you are definenetly not super saturated with these DO readings. If taken on sunny day your visibility is 100% not from phytoplanktobn. We checked a pond yesterday 21 inch visibility and 10.4 DO at 82 degrees.
Did you ever add any ag lime to the pond? If not it seems thts might be necessary before the fertilizer will work its magic.
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Joined: Aug 2004
Posts: 8,854 Likes: 1
Moderator Ambassador Field Correspondent Lunker
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Moderator Ambassador Field Correspondent Lunker
Joined: Aug 2004
Posts: 8,854 Likes: 1 |
Greg, I thought oxygen saturation was 7.9 ppm at 82 degrees F.
Does that mean that the water you were testing was supersaturated from all the phytoplankton? How high above saturation can water get?
Holding a redear sunfish is like running with scissors.
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Joined: May 2002
Posts: 3,973
Ambassador Field Correspondent Lunker
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Ambassador Field Correspondent Lunker
Joined: May 2002
Posts: 3,973 |
Bruce yea that is exactly my point. When looking at phyto blooms we measure the % DO saturation. If checked in afternoon after day of sunlight it can be above 150%. I have readings of 150% or higher quite often. This is why I say if 100% or less more than likely not from phyto bloom. Pretty good tool to employ along with secchi disc.
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Joined: Apr 2003
Posts: 1,902
Lunker
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Lunker
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Pond Boss Subscriber & Books Owner
If you can read this ... thank a teacher. Since it's in english ... thank our military! Ric
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Joined: Sep 2006
Posts: 530
Lunker
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Lunker
Joined: Sep 2006
Posts: 530 |
Next year I will give fertilization a try. I got the pond soil and water ready to go out tomarrow for testing.
I bought some of Dunns trophy grower liquid. I wasnt thinking when I bought it but now I am wondering something. Does fertilizer have a shelf life? Also can it get cold, if I left it in the garage it could freeze, or should I bring it inside.
Joey
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