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Old 08/18/2018, 07:02 AM   #1651
sirichok
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Quote:
Originally Posted by Museet View Post
Nice work! Sounds like your are on the way. Just let the changes take some time, not lowering the PO4 or NO3 too fast. I find it easier to level out/keep values stable if the lowering has been slow.



I would aim for 5ppm NO3. If you come close to 0 you might get cyanobacteria, so I like some margin.



Great to get an update. Looking forward to the progress.



/ David


What is the value of Po4 in your tank ? What is your preferred target ?


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Old 08/18/2018, 07:32 AM   #1652
Museet
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Originally Posted by sirichok View Post
What is the value of Po4 in your tank ? What is your preferred target ?


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We try to keep it between 0,02 and 0,08 ppm. But as long as it's stable it might be okey with a little higher values too I think.


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Old Yesterday, 07:47 PM   #1653
sirichok
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50,000 litre tank in a boutique hotel (Bangkok , Thailand)

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Originally Posted by Museet View Post
We try to keep it between 0,02 and 0,08 ppm. But as long as it's stable it might be okey with a little higher values too I think.


Thanks for the information . I noticed two effects regarding the addition of Lacl3 . First I notice a drop in KH so I assume that Lacl3 bind with phosphate as well as carbonate . Secondly I notice that raising magnesium is a lot harder and take more amount of magnesium chloride . Do you experience any effect on raising magnesium while dosing Lanthanum chloride ?

Best regards


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Old Today, 12:24 AM   #1654
Museet
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Quote:
Originally Posted by sirichok View Post
Thanks for the information . I noticed two effects regarding the addition of Lacl3 . First I notice a drop in KH so I assume that Lacl3 bind with phosphate as well as carbonate . Secondly I notice that raising magnesium is a lot harder and take more amount of magnesium chloride . Do you experience any effect on raising magnesium while dosing Lanthanum chloride ?

Best regards


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Did a search and you are right. Sorry, I didn't know!

I had to look through our notes from when we have used LaCl. Sometimes the KH drops a little, sometimes it doesn't(at least not much enough for us to see). Perhaps our doses have been very small and the KH drop is small too.

About magnesium and LaCl I don't know. I know I had trouble raising the Mg when only meassured with Salifert, but that was probably because the test wasn't that good. Nowdays I rely on the ICP tests for Mg.

Not the best answers this time, sorry for that


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