Is there a down side to low Nitrates (<10ppm) - Page 2 - The Planted Tank Forum
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post #16 of 21 (permalink) Old 02-22-2019, 11:47 PM
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Like cooking for 10 daily, eating alone, and throwing the leftovers out on Sandays. And not getting fatter.
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post #17 of 21 (permalink) Old 02-24-2019, 02:55 AM Thread Starter
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Did my water change today and started the new fertz program. I hadn't vacuumed for a couple of weeks. Tried once but my new Acaras spawned 5 days after I brought them home and one got violent with the hose so I stopped. The eggs have hatched and the fry are not to be found. Long story short I was able to vacuum yesterday. Man, did it need it. As a result the nitrates had crept up to a little over 30ppm. After the water change that dropped to ~20ppm. Tank looks a bunch better.

20190223_121443 by pat w1, on Flickr

Most of the fish are in hiding after the WC the only ones visible are the Danios on the right and they are in a tight schoal. They tend to do that in response to a WC.

Planted S. Am. Waterbox 190 (141G dispaly w/sump & stand)
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post #18 of 21 (permalink) Old 02-24-2019, 03:13 AM
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Quote:
Originally Posted by Cichlid-140 View Post
Did my water change today and started the new fertz program. I hadn't vacuumed for a couple of weeks. Tried once but my new Acaras spawned 5 days after I brought them home and one got violent with the hose so I stopped. The eggs have hatched and the fry are not to be found. Long story short I was able to vacuum yesterday. Man, did it need it. As a result the nitrates had crept up to a little over 30ppm. After the water change that dropped to ~20ppm. Tank looks a bunch better.

20190223_121443 by pat w1, on Flickr

Most of the fish are in hiding after the WC the only ones visible are the Danios on the right and they are in a tight schoal. They tend to do that in response to a WC.
Very nice looking tank . Love the look of the rounded rock.

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60 g. low tech w/ F1 Alenquer pair /Stendker "Tefe" discus and wild Altum Angels
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post #19 of 21 (permalink) Old 02-26-2019, 02:15 PM Thread Starter
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I was thinking about something I read by @burr740 about the difficulty in insuring accurate dosing of CSM+B.

I make stock solutions for my dosing. Now that I'm in a sort of an experimental mode it makes sense to make small batches to remain agile enough to respond to the results I see in the tank. This plays directly into the issue Burr740 raised in that due to the intended large scale use in standard Agriculture the dosing of small amounts (<10g) would very likely result in inaccuracies rising from the varying consistency of the mix. Burr740 recommended to make a very concentrated solution and dose small amounts. This would require larger quantities of the mix and side step some of the consistency issues. I make an AIO which includes NO3 (as KNO3), PO4 (as KH2PO4), CSM+B and added 11% Fe DTPA as a hedge against pH issues. This wasn't as much of a problem when mixing a 1 liter batch for 11+ weeks. However, I noticed something on the latest 4 week test batch. The Qty of CSM+B called for was reduced to less than 8g. It became clear the mixing issue of the dry CSM+B could have a negative impact on the accuracy of the final mix. If I reduce my batch sizes down further to a two week supply the issue will become acute.

To alleviate this I've decided to make up an aqueous solution of only CSM+B (with Ascorbic Acid and Potassium Sorbate for stability) to use as a component of my stock solutions. The aqueous mix will be 1g CSM+B to 10ml distilled water (10ml final volume). When my recipe calls for ... say 3.8g, I'll simply use 38ml (via syringe) instead. I've done a solubility check with Rotala Butterfly and with my own StockSolPro spreadsheet. My first qty will be 750ml (75g CSM+B).
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Planted S. Am. Waterbox 190 (141G dispaly w/sump & stand)
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Last edited by Cichlid-140; 02-26-2019 at 03:05 PM. Reason: edit
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post #20 of 21 (permalink) Old 02-26-2019, 02:51 PM
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@Cichlid-140 thats a great explanation of the potential issues and an excellent solution for handling it. Damn good post


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post #21 of 21 (permalink) Old 02-26-2019, 03:04 PM Thread Starter
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Originally Posted by burr740 View Post
@Cichlid-140 thats a great explanation of the potential issues and an excellent solution for handling it. Damn good post
Thank you.

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