Ferts And Oxygen

[Biulu]

I have upped my fertilisation regime and I am noticing that my fish are now continuously at the top like gasping for air. Is there any relationship between the 2?

Tank: 180 litre, about 75% planted, 8 hrs light, 30W
Currently dosing:
10 ml of liquid carbon a day (amount for 250 litre according to the instructions)

Every other day:
10 ml of potassium
2.5 ml of nitrogen
5 ml of phosphate

30% water change/week

 

[ajs2294]

The lower the pH the lower the oxygen levels. My bet is the Carbon is lowering your pH

 

[Mikaila31]

Liquid carbon would be my first guess. The liquid stuff doesn't normally effect PH, but it is really weird stuff none the less. I have heard of many plant, fish, shrimp deaths to liquid carbon. Also your phosphate seems kinda high, but I guess it all depends what you are adding

 

[Biulu]

Thanks for the replies. I am adding Seachem and the 5 ml for the phosphate is according to the instructions for a tank of 150 litres, so that is ok

 

[Biulu]

I think it is the liquid carbon guys; I put it in early this morning (today only carbon, no ferts) and 2 hrs later they are all gasping again... I think the problem is that I am putting the carbon in too early when the lights are not yet on. So, I have now switched on the lights and will see whether things are better in an hour.

 

[Joshwainwright]

I think it is the liquid carbon guys; I put it in early this morning (today only carbon, no ferts) and 2 hrs later they are all gasping again... I think the problem is that I am putting the carbon in too early when the lights are not yet on. So, I have now switched on the lights and will see whether things are better in an hour.

Don't kill your fish with your liquid carbon experiments!