black edges and GSA - The Planted Tank Forum
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post #1 of 5 (permalink) Old 02-05-2018, 04:49 PM Thread Starter
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Question black edges and GSA

I recently changed my light to the Finnex FugeRay Planted + 16" long. This light is much more intense than my old eLive clip light with 4 pods (2 Hi-Output, 1 Plant, 1 50/50). The light is on a timer for 8 hours a day. I dose Flourish once a week, Iron every other day, and I try to do Flourish Advance every day, but I haven't been too consistent with that. I have been getting GSA on the front and a little on the side of the glass and on my anubias. I didn't mind this too much. But if there is a fix to reduce it I would like to know.

I am also noticing my buce getting black edges on all of its leaves now along with one of the other plants I have up front. Is this an algae or a nutrient deficiency? how do I fix this? I really love this plant and want it to be okay.

One leaf of my Crypt Wendtii v. Red is getting some thin looking spots, any ideas why?
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post #2 of 5 (permalink) Old 02-05-2018, 07:55 PM
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The GSA usually appears when there is a lack of phosphates. The black edges could very well be the start of BBA. Fluctuating levels of CO2 are usually responsible. I don't have any experience with flourish advance but flourish "comprehensive" just contains micros. It's heavy on iron more than anything. It lacks the necessary macro nutrients for healthy growth. Unhealthy plants are an easy target for algae. Depending on your stock, you'll at least need some potassium and phosphate even if fauna is providing necessary nitrate levels.
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post #3 of 5 (permalink) Old 02-05-2018, 08:47 PM Thread Starter
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I have Phosphorus and Potassium from Seachem that I used to use but stopped thinking that it wasn't necessary. I wonder if this is the reason.

My current stock:
5 Corydoras Aeneus (juvenile)
1 Celestial Pearl Danio
1 Tiger Nerite
3 Assassin Snails
HUNDREDS of baby snails. my assassins don't seem to be working.
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post #4 of 5 (permalink) Old 02-05-2018, 09:38 PM
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If you haven't already... get a nitrate and phosphate test kit as well as a KH/GH kit. It wouldn't hurt to know where you stand with calcium levels. I just use use the API ones like most folks. They work well enough to get you in the ballpark.
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post #5 of 5 (permalink) Old 02-05-2018, 11:44 PM Thread Starter
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Quote:
Originally Posted by madcrafted View Post
If you haven't already... get a nitrate and phosphate test kit as well as a KH/GH kit. It wouldn't hurt to know where you stand with calcium levels. I just use use the API ones like most folks. They work well enough to get you in the ballpark.
Ammonia : 0
Nitrite : 0
Nitrate : 5
gH : 10
kH : 0

I don't have a phosphate test kit yet.
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