Water help please - The Planted Tank Forum
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post #1 of 9 (permalink) Old 07-01-2017, 01:27 PM Thread Starter
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Could someone please help me understand my water parameters. I have never needed to check my water in all of the years i have had aquariums maybe I have been lucky.

I have struggled with green hair algae for a while now and I think it was down to too much light after my upgraded LEDs to which I am starting to get under control.

All of a sudden though my plants have started melting and my fish are not happy. Lost 2 in the last week when I haven't lost a fish in about a year prior to this.

So got a 5 in 1 tester and it shows the following:

NO3 - 160 ppm(mg/L)
NO2 - 0 ppm(mg/L)
PH - 7
KH - 240 ppm(mg/L)
GH - 180 ppm(mg/L)

I have diy co2 and dose carbon liquid daily.

Light this week reduced to 9 hours and dimmed the light slightly.

Any help would be appreciated.

I don't know if it helps but i tested my tap water and it is:

NO3 - 40
NO2 - 0
PH - 7
KH - 180
GH - 180

Last edited by Darkblade48; 07-02-2017 at 09:31 AM. Reason: Please use the edit function for back to back posts to keep threads cleaner
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post #2 of 9 (permalink) Old 07-01-2017, 02:12 PM
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When was your last water change? I notice your ph hasnt dropped any from the addition of co2 which is odd. At optimal levels of co2 the ph should be lower by a full point. Nitrates seem high though and that can be fixed with a water change
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post #3 of 9 (permalink) Old 07-01-2017, 03:17 PM Thread Starter
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I do a 20 - 25% water change once a week. I did my water change about an hour before I did the test kit as I saw my clowns and catfish acting oddly near the surface so did a water change and went straight out to get a test kit as I am worried about loosing more fish.

They do look a bit happier since the water change but I don't get what has changed.
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post #4 of 9 (permalink) Old 07-01-2017, 06:04 PM
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Hi Lgtuk,

The paper test strips are notoriously inaccurate; I would suggest getting the API Freshwater Test Kit which although not perfect is more accurate.

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75 Gallon, 2X55W AH Supply CF 8800K, 1X 59W Fluval Plant (3.0); 45 Gallon Tall, 1X 46W Fluval Plant (3.0); 30 Gallon Long; Fluval F&P 2.0; 20 Gallon, 1X26W AH Supply LED; all with CO2 & (Calcined) Montmorillonite Clay
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post #5 of 9 (permalink) Old 07-01-2017, 06:24 PM Thread Starter
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Ok I will have to order some as my local only had api test strips.

Is there anything obvious in my results I need to look at?
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post #6 of 9 (permalink) Old 07-01-2017, 06:46 PM
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need pics of tank

obviously you need to make sure they have some ferts, etc...

i wouldn't look to water parameters to solve the issue... you already know what is wrong... too much light and (i am assuming) not enough plant mass?


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post #7 of 9 (permalink) Old 07-02-2017, 09:07 AM Thread Starter
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I have come down to my tank this morning and my co2 cone is bright yellow and my fish are looking pretty dopey and lop sided. Possible my fish looking poorly is down to co2 overdosing?

I have increased surface agitation to release some of the co2 as I have no regulator on my diy co2 setup and I will monitor today.

I usually dose ferts daily but stopped when trying to starve and kill the green hair algae. Now I have started using co2 maybe I need to up the ferts again as this could have caused the melt?
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post #8 of 9 (permalink) Old 07-04-2017, 02:11 AM
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Water help please

Stopping dosing ferts while still blasting light and co2 is just helping the algae even more. Weaker plants mean stronger algae. Plant health is key to starving algae.


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post #9 of 9 (permalink) Old 07-04-2017, 07:34 PM Thread Starter
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Sorry for the rubbish quality photos but I asume I do have quite a few plants in my tank? But they are very leggy and not thickening up. Most likely because I stopped the ferts.

So your saying I need to up the ferts to get rid of the algae? The algae is now only concentrated in the moss which i am struggling to rid.

Can I over dose the tank or just keep putting it in daily? (I have a dose once per week fert)
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