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General Fishkeeping Chat / Re: Effect of photoperiod on pH
« Last post by Sue on December 12, 2018, 09:21:36 AM »
The amount of hydrogen ions (ie pH) and any equilibrium in water eg ammonia-ammonium will be affected by changes in temperature, even just a degree or two. And that's just the chemistry part. Add plants and micro-organisms and they will also affect water chemistry. Plants taking up CO2 in the light, and more so in bright light, affects pH and the ammonia/ammonium ratio quite a lot.
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General Fishkeeping Chat / Re: Effect of photoperiod on pH
« Last post by daveyng on December 11, 2018, 11:06:29 PM »
My NH3 level in the Pond is currently at 0.012 ppm. NH4 averages out at 100 ppb with highs around 110 ppb and lows around 95 ppb. The pH is sitting around 7.4 at the moment. Iíve just changed the slide so itís dropped a bit (from 7.48). My fault as I didnít pre-soak the slide for a long enough period.
I know that when the temperature rises the NH4 level drops. I am assuming that itís converting to NH3 when this happens.
The pH is extremely stable at the moment as the Pond temperature is only fluctuating by approximately 1 degree.
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General Fishkeeping Chat / Re: Effect of photoperiod on pH
« Last post by Sue on December 11, 2018, 04:30:46 PM »
I think that @daveyng  also has a Seneye for his pond.  ;)

I'd forgotten that  :-[
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General Fishkeeping Chat / Re: Effect of photoperiod on pH
« Last post by Helen on December 11, 2018, 04:24:08 PM »
I think that @daveyng  also has a Seneye for his pond.  ;)

My Seneye is currently showing NH3 as 0.016ppm. I've not trimmed the NH3 reading at all, so suspect this is more or less my tanks zero. NH3 reading generally doesn't seem to be affected by the pH. Though interestingly, with this slide I've had a couple blips where the NH3 has temporarily increased slightly. It reads in units of 0.002, so a blip up to 0.018 doesn't cause me concern.

My Seneye also gives a trace for NH4 in ppb. I think this is a calculated value, rather than a measured value. But because it is ppb, it is possible to see how it inversley mirrors the pH. (It has a clearer scale, so I occasionally refer to it to check the pH details)
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General Fishkeeping Chat / Re: Effect of photoperiod on pH
« Last post by Sue on December 11, 2018, 09:23:08 AM »
If there was ammonia above trace level, this would be affected in the sense that more of it would be in the toxic ammonia form at higher pH. In a cycled tank or pond there should be no ammonia measurable with standard test kits but Helen's Seneye is much more sensitive so probably will be able to detect ammonia. What I don't know is whether Seneye can distinguish between ammonia and ammonium - @Helen over to you on this one  :)

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General Fishkeeping Chat / Re: Effect of photoperiod on pH
« Last post by daveyng on December 10, 2018, 11:09:21 PM »
I had the same effect in the Pond over the summer. The pH shot up from about noon. (When direct sunlight) hit the water. I ended up covering it for a few hours each day to prevent this.
Did this also affect the NH3 levels ?
7
The Emergency Room / Re: Rasboras Bloated or Pregnant
« Last post by Rustle on December 10, 2018, 09:34:33 PM »
It happened quick and I can't work out why. It's not a parasite as I can't see no white stringy poo or any signs of worms etc. It looks like a waiting game then.
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General Fishkeeping Chat / Re: Think Fish Keepers Daily News.
« Last post by Sue on December 10, 2018, 09:22:57 PM »
Actually that makes a lot of sense if they are in a corner of the temporary building. It will be easy enough to move shelves of decor, food, filter media etc once the new building is finally built, but setting up a lot of tanks and the filtration system isn't something to be done quickly, nor would it be easy to move.
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General Fishkeeping Chat / Re: Think Fish Keepers Daily News.
« Last post by fcmf on December 10, 2018, 08:43:02 PM »
In that case it's a good thing we haven't braved the Christmas crush  ;D I don't use Facebook, I just go by MA's website. Presumably they do have dry goods?
Yes, according to a comment on that page.  :D
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The Emergency Room / Re: Rasboras Bloated or Pregnant
« Last post by fcmf on December 10, 2018, 08:33:45 PM »
Don't think it can be that, then, unless you're feeding a huge amount in the morning. I now feed several times per day but mine are definitely much slimmer.

I also don't think it can be the algae wafer to blame as I think the shrimp and ottos will get most of the share, and one algae wafer per week is unlikely to have much effect. I've noticed my two smaller harlequins hang around over the snail food dish and peck at the food frequently, yet no bloating.

Hmmm - think best to follow Sue's advice and see what happens.

Were the harlies much slimmer, then just expanded suddenly and recently, or has it been gradual?
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