Landens aqua soil and ph - The Planted Tank Forum
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post #1 of 7 (permalink) Old 06-04-2020, 11:03 PM Thread Starter
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Landens aqua soil and ph

Hello,

This is regarding a caridina shrimp tank thatís been prepping the last 45 days or so. I use RO water remineralized with:
Mgso4 : 10ppm
Caso4.7: 20ppm
KCL: 10ppm
TDS 130~
Nitrates sit at about 5ppm. Moderately planted.

PH 5.2-5.3 (freshly calibrated ph pen)
Any thoughts why the ph is so low? I was expecting more around the lines of 6.5. Should I add in some carbonates to get maybe a 1kh?

The crystals going in are raised in about 6.4ph from SoShrimp. The Gourami in the tank now seems to be loving life. Im curious for some thoughts because I know most reminerlizers are just mgso4, caso4, k2so4 so I donít get why my ph is so low.


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post #2 of 7 (permalink) Old 06-04-2020, 11:24 PM
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What is your KH test kit showing?
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post #3 of 7 (permalink) Old 06-04-2020, 11:45 PM
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Landen soil eats KH for breakfast, lunch, and dinner. I just put my 3 amano shrimp into a Landen soil tank with no KH and very low pH (5-ish). So far, so good here but YMMV as always.


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post #4 of 7 (permalink) Old 06-05-2020, 12:09 AM Thread Starter
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Quote:
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What is your KH test kit showing?

0. I cleaned the tank when I set it up and havenít ever put in anything to effect kh. Iím confused because I see these commercial breeders having zero kh but a higher ph around 6-6.5.


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post #5 of 7 (permalink) Old 06-05-2020, 12:11 AM Thread Starter
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Quote:
Originally Posted by zivvel View Post
Landen soil eats KH for breakfast, lunch, and dinner. I just put my 3 amano shrimp into a Landen soil tank with no KH and very low pH (5-ish). So far, so good here but YMMV as always.

Amanos are tanks! Lol. If I was putting bee shrimp in I wouldnít even think twice about it but I have read so much that crystals generally prefer a higher ph with many breeders saying 6.7ish is optimal.


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post #6 of 7 (permalink) Old 06-05-2020, 02:57 AM
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Originally Posted by Sam the Slayer View Post
Amanos are tanks! Lol. If I was putting bee shrimp in I wouldnít even think twice about it but I have read so much that crystals generally prefer a higher ph with many breeders saying 6.7ish is optimal.
Yeah, sorry, I don't mean to say I'm any kind of shrimp expert. But I do know what happens to KH with Landen soil, and I do know you'll have a hard time keeping pH up without any KH.

But my unproven beliefs are that pH is overrated in general and that some shrimp like harder and/or higher-alkaline/KH water.

I have yet to try adding KH to any of my Landen soil tanks. I don't know what happens if you add K2CO3 or baking soda.
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post #7 of 7 (permalink) Old 06-05-2020, 03:03 AM Thread Starter
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Landens aqua soil and ph

Quote:
Originally Posted by zivvel View Post
Yeah, sorry, I don't mean to say I'm any kind of shrimp expert. But I do know what happens to KH with Landen soil, and I do know you'll have a hard time keeping pH up without any KH.

But my unproven beliefs are that pH is overrated in general and that some shrimp like harder and/or higher-alkaline/KH water.

I have yet to try adding KH to any of my Landen soil tanks. I don't know what happens if you add K2CO3 or baking soda.

After I wrote ďamanos are tanksĒ I should have created a new paragraph. Was a separate general thought. But I do agree that most of the time ph doesnít matter as much as some think and stability is far more important.


I just added 40 mg of caco3 (3.5ppm ca) which brought kh up .49 in the 12 gallons of water. After waiting 1 hour the ph has gone from 5.5 to 6.88. Iíll measure it over the next couple of days and see what happens to the ph. Ultimately I may add 20 mg or so if it holds for a week.

Update: didnít hold very long. Ph was at 6.06 12 hours later.
Update: 36 hours later ph is 5.60
Update: another 24hrs later 25% post w/c 6.0ph (remin via equilibrium to 120tds, tank tds 136)
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Last edited by Sam the Slayer; 06-08-2020 at 05:55 AM. Reason: Notes so I can keep track
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