Plants struggling all the sudden - The Planted Tank Forum
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post #1 of 6 (permalink) Old 06-05-2020, 03:13 AM Thread Starter
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Plants struggling all the sudden

I’ve had this tank set up for years with various changes, but it’s been exactly the same for at least a year now. My plants were doing really well, especially my hygro, but now it’s struggling.

It’s 50g, with pool filter sand and root tabs. I’ve recently started dosing liquid fertilizer again to correct the problem, but so far doesn’t seem to be helping too much. Plants are hygro, variety of crypts, sag, a couple of small sword varieties, giant duckweed and a few Anubias, nothing high maintenance, being the tank is supposed to be low-tech and low maintenance.

Recently, the old growth on my hygro has gotten covered in algae, and the new growth is incredibly stunted and twisted, which would suggest a calcium deficiency. But my water is naturally very high in calcium, I have a pH of 8.0-8.2, a gH of about 20 degrees and a kH of about 15-17 degrees, so that doesn’t make sense to me, not to mention the root tabs that should be providing nutrients.

Light is a planted+ 24/7, on for 3hrs, off for 4hrs and on for 3hrs, at about 65-50% brightness. Tank is very lightly stocked, 50% water changes every 1-2 weeks.

Any ideas what’s going on and why the sudden changes in my plants? They only started struggling maybe a month ago.
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post #2 of 6 (permalink) Old 06-05-2020, 03:39 AM
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A pic of plants would help diagnose deficiency if any.

What, how much and how often are you dosing?
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post #3 of 6 (permalink) Old 06-06-2020, 03:04 PM Thread Starter
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Here are a few pictures of the stunted growth. I use the PPS Pro system for dosing ferts, which I know is meant to be dosed every day, but for me it’s more like every other day that I remember.
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post #4 of 6 (permalink) Old 07-02-2020, 01:11 AM
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Quote:
Originally Posted by FuzzyMuffin View Post
Iíve had this tank set up for years with various changes, but itís been exactly the same for at least a year now. My plants were doing really well, especially my hygro, but now itís struggling.

Recently, the old growth on my hygro has gotten covered in algae, and the new growth is incredibly stunted and twisted, which would suggest a calcium deficiency. But my water is naturally very high in calcium, I have a pH of 8.0-8.2, a gH of about 20 degrees and a kH of about 15-17 degrees, so that doesnít make sense to me, not to mention the root tabs that should be providing nutrients.
Something had to change, maybe your water utility company changed water source or started adding some chemicals. I would check local water report to see what are the concentrations of Ca and Mg. At 20 dGH you may have very high Ca and not enough Mg.
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post #5 of 6 (permalink) Old 07-02-2020, 02:09 AM
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Something had to change, maybe your water utility company changed water source or started adding some chemicals. I would check local water report to see what are the concentrations of Ca and Mg. At 20 dGH you may have very high Ca and not enough Mg.
Edward, I didnt even read your response-- I just am so thrilled you are here.
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post #6 of 6 (permalink) Old 07-03-2020, 01:20 PM
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Edward, I didnt even read your response-- I just am so thrilled you are here.
That was nice, thank you!
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