PH too high or what? - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 09-11-2008, 11:44 PM Thread Starter
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PH too high or what?

I made some changes to the tank and took the advice of some others.
Tank specs:

20 Gallon
65 Watt light - 6700k bulb
7 hours
200 Marineland Bio Filter
3 Liters of DIY Co2 replaced every 10 days.
Venturi from Red Sea CO2 kit

Biomass:

2 bunches of Moneywort
5 - 6 stems of Cabomba
Marble Vals
2 bunches of red temple
amazon sword
ruffle sword
red rubin sword
anacharis

Dosing:
EI Method for 20 gallon tank.
M, W, F - 1/8 tsp KNO3, 1/8 tsp of K2SO4 - I'm still waiting on my phosphates but am planning to dose 1/16 tsp.
T, Th - 1/16 tsp of CSM+B plus 1-2ml of liquid fert iron (flourish)

I did the PH 24 hour plan to see what my PH was and when I first did it, it was 7.8... next day 8.0... doesn't make sense, thought it was suppose to drop. Using API freshwater master test kit.
Nitrates - 20 - 40 ppm (color blind so hard to tell which one its closer too).
GH is high - around 15 and KH is low around 3 or 4...

I had black beard algae, and should I trim the parts that were on the leaves? My plants are pearling and growing, but not lush green, and the lower leaves on my temples are a little brown, and moneywort as well is not as green on the bottom. Could flow be a problem? I'm still getting algae on the glass as well. Since I'm missing phosphates in my dosing, can this cause algae? The other algae is growing on my rocks, like a small green patch.. no hairs though. A planted tank is hard work... I just want it to be lush green.
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post #2 of 6 (permalink) Old 09-11-2008, 11:58 PM
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My tap PH raises, its 7.4-7.6 straight from the tap, 24hrs later its 8.0-8.2

Low Phosphates it limiting your plants some, I also think your CO2 levels fluctuate and cause the BBA. You should remove the leaves with BBA or you can spot dose Excel to kill it.
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post #3 of 6 (permalink) Old 09-12-2008, 12:46 AM
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What are you guys using for substrate, and are there any rocks in your tank?

Your pH shouldn't be going up unless there's something leeching into your tank water, most likely carbonates.





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post #4 of 6 (permalink) Old 09-12-2008, 01:27 AM Thread Starter
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I have flourite substrate and the rocks are slate that I purchased from a website. The black beard algae does not slip off, I would have to trim it. It looks like there is some other algae as well instead of the BBA. I will dose excel as well. With CO2, I have another 2L bottle prepared for a day before I switch the old one out. Monday was when I added a new batch and I have seen pearling, but not much help with the algae.

Lauraleelbp:

I had carbon media in my filter, but I took it out since I hear the carbon media filters out the fertilizers. Should I put it back in or no?
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post #5 of 6 (permalink) Old 09-12-2008, 01:46 AM
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Quote:
Originally Posted by lauraleellbp View Post
What are you guys using for substrate, and are there any rocks in your tank?

Your pH shouldn't be going up unless there's something leeching into your tank water, most likely carbonates.
This is straight tap water, not in the tank, just in a glass or container. If I let it sit out or aerate it the PH goes up. I did lots of testing when I 1st setup my tank b/c I was confused as to why my tap water was ~7.5 PH and my tank was ~8.0 PH. I was told it was due to CO2 off gassing. I have high GH/KH and also Phosphates in tap.
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post #6 of 6 (permalink) Old 09-12-2008, 02:44 AM
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That's some weird tap water!

Personally, I'd go with RO water if I had those tap parameters.

You want phospates proportionate to the nitrates in your tank. Flow may very well be part of the issue; I think you may want to consider adding another CO2 setup and run one on each side of the tank, as well.





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