Hi, My tank has been running for years and I'm suddenly seeing diatoms on plant leaves this week. Not a serious outbreak but noticeable. I know it will resolve itself as it has in the past when I've moved stuff about or added too many fish at once. I'm just curious about the possible cause this time.
Only changes have been:
A new FX6 filter to replace an EFX 600 that was leaking. All biomedia was moved across to temporary filters immediately then placed into the FX6 within 24 hours. Only the sponges were binned. The filter is one of 3 on the tank. The others are packed with biomedia and have not been touched during this time. They were cleaned 2 and 3 months ago. The filters are normally cleaned one at a time on a 3 month cycle so nothing unusual there. I've seen no ammonia in the tank since the change. I was doing daily checks at first.
The other change was a lighting unit dying just before Christmas. This reduced the light during the middle 4 hours of the lighting period by 2 x 54w HO T5s. The tank is now running on 2 x 54w for 8 hours.
Tank is 5x2x2
I've added no fish or plants.
Water changes happen weekly
Ferts and liquid co2 are added daily at lights on and measured carefully.
The substrate hadn't been disturbed
What do you think?
Only changes have been:
A new FX6 filter to replace an EFX 600 that was leaking. All biomedia was moved across to temporary filters immediately then placed into the FX6 within 24 hours. Only the sponges were binned. The filter is one of 3 on the tank. The others are packed with biomedia and have not been touched during this time. They were cleaned 2 and 3 months ago. The filters are normally cleaned one at a time on a 3 month cycle so nothing unusual there. I've seen no ammonia in the tank since the change. I was doing daily checks at first.
The other change was a lighting unit dying just before Christmas. This reduced the light during the middle 4 hours of the lighting period by 2 x 54w HO T5s. The tank is now running on 2 x 54w for 8 hours.
Tank is 5x2x2
I've added no fish or plants.
Water changes happen weekly
Ferts and liquid co2 are added daily at lights on and measured carefully.
The substrate hadn't been disturbed
What do you think?
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