plantbrain
Member
- Joined
- 2 Aug 2007
- Messages
- 1,938
My main concern is the rather high levels of Copper in these.
I guess it's fine if you dose hardly any, but then why use it?
1:5 ratio of Cu: Fe seems way too high for things like shrimp and small fry.
Fine if you dose tiny amount or add no more than the 0.1ppm.
If you dose .5, now it's 0.1ppm of copper that will stay in solution and be available for toxicity.
I dose 0.5 to 1.0 Fe every other day or thereabouts.
0.1-0.2ppm of copper is not what I want.
0.02 to 0.05ppm is the most I generally desire.
Flourish adds much less copper, but goes too far the other direction.
I think modifying these products and adding a bit more Fe is one solution though.
If you have softer water dose more frequently as a habit, Fe gluconate, harder water, DTPA Fe.
Add a bit of the Fe, say 1/3rd by mass of the Fe amendment.
Regards,
Tom Barr
I guess it's fine if you dose hardly any, but then why use it?
1:5 ratio of Cu: Fe seems way too high for things like shrimp and small fry.
Fine if you dose tiny amount or add no more than the 0.1ppm.
If you dose .5, now it's 0.1ppm of copper that will stay in solution and be available for toxicity.
I dose 0.5 to 1.0 Fe every other day or thereabouts.
0.1-0.2ppm of copper is not what I want.
0.02 to 0.05ppm is the most I generally desire.
Flourish adds much less copper, but goes too far the other direction.
I think modifying these products and adding a bit more Fe is one solution though.
If you have softer water dose more frequently as a habit, Fe gluconate, harder water, DTPA Fe.
Add a bit of the Fe, say 1/3rd by mass of the Fe amendment.
Regards,
Tom Barr