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Discussion Starter · #1 ·
I went out the store and bought the AP phosphate test, reason (my stems on my Glosso had turned brown) and I restocked my Nitrate test. My Nitrate was @ 80ppm Last night. I had just did a 50% water change Saturday Night and was quite surprised. Tested my phosphate ( I read the they are not reliable) it tested 5ppm. So I tested my tap water and it was 2ppm phosphate. So I am assuming since my goal should be:

Nitrates 10-20ppm
Phosphates 1.0-2.0 ppm
Iron 0.1-1.0 ppm
Potassium 10-20 ppm

I would just dose K. Does this make since. I mean if I already have 2ppm of P from my tap. I know under the EI method testing isn't needed but my stems turning brown got me worried, I know assuming in this hobby can mean DEATH......
 

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Discussion Starter · #3 ·
The reason for the plants in your tank turning brown could be quite numerous without knowing other details ( lighting used especially )
I get the same amount of phospates on my tap here in NY and still dose 1/4 tsp 3 X a week on my 50G.
Just my 2 cents

I use 520 watts of light on the tank. 10 hours a day. EI method, Soilmaster select,PH7.0 KH3,pressurized CO2.
 

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520w/125 gallon= 4.16 w/gal.

That's a lot of light.

If you look at the KH/pH, you do not have even close to the right amount of CO2 ppm in there. You need a pH of about 6.3 using only CO2 to lower it.
High light, low CO2 = algae.

Regards,
tom Barr
 

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Discussion Starter · #7 ·
Thank You for your input Tom. I did turn up the co2 yesterday and the fish seem ok but I am a little hesitant on turning it up until I find a drop checker. I had posted before that my Ph would swing as time went by that I had my CO2 on. It would start @ 7.0 @ 7am then drop to 6.2 by 5pm. So the question begs to be asked @ what time should I check my PH, maybe mid day?
 
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