Getting control on this gsa and potassium phosphate - The Planted Tank Forum
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post #1 of 7 (permalink) Old 04-09-2019, 08:31 PM Thread Starter
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Getting control on this gsa and potassium phosphate

4 months ago trying my hand at a low tech tank, so I have a 29gal in the dining room with 4 goldfish.
Plants
Java fern
assortment of anubias

Light
Beamswork
30" DA 80 80x - 4800 lumen 64x 6500K, 16x Actinic

First couple months was going great, ferns were producing plantlets and growing new leaves, then slowly I started seeing algae growing on the glass, then tiny specs starting to appear on the leaves. Few spots of GBA as well. I did a 16:1 bleach dip @ 2:30min, and all was well. Read here that low phosphates can cause it, so I bought a phosphate kit. 0.25 the tank read fresh out of a water change and .50 near the end of the week. So I bought some monopotassium phosphate
56424404_1862675107170153_8822238614147563520_n by Corey S, on Flickr



Little bit really goes a looooong way, tip of a teaspoon my phosphates blew past 10.0! Few water changes later I was able to hover around 5.0, but dosed a tad bit more before leaving for a 2 week vacation, had my automatic feeder setup and brother came by to check on the house (there is also rumor he hand fed the fish too) and gsa was on the lower portion of the tanks and all the leaves were covered in it, and leaves are getting yellow spots? Apparently things like to [censored][censored][censored][censored] when I leave. Nitrate was over 40ppm and phosphate still over 10ppm, did a 70% water change yesterday and rechecked levels as of right now nitrates are 20ppm and phosphates 2.0. I also razored the glass and gave everything a bleach dip AGAIN.

Now is THIS the ideal level to maintain? I had this vision of a nice low tech low energy planted tank, but its not turning out that way. I also like to keep my nitrates in the 5-10ppm but hear conflicting reports with ratios on that. Light wise, how is that light, medium ish level? This stuff is starting to annoy me.

As is when got back home
57164121_1262252490589735_7287818533554094080_n by Corey S, on Flickr
56536256_399537687544391_606285988754358272_n by Corey S, on Flickr

Plants
56652766_425034111603687_1663601298013945856_n by Corey S, on Flickr
56641451_272574973681793_3998933612811517952_n by Corey S, on Flickr
56450549_2034551813340074_4929218491128479744_n by Corey S, on Flickr

After water change and bleach dip
57226454_285264235734084_3103203442902958080_n by Corey S, on Flickr

Water test as of today
56595401_279448766313423_3178505085869096960_n by Corey S, on Flickr


If it matters it has a HOB filter and has been cycled for years and I am on well water.
p.s.s light is on a timer, 8hours a day.
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post #2 of 7 (permalink) Old 04-12-2019, 03:26 AM
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Other than phosphate are your dosing any other fertilizers?
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post #3 of 7 (permalink) Old 04-12-2019, 02:09 PM Thread Starter
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Nothing at all, Id prefer to dose nothing ever but I am seeing a difference between low tech and no tech, it doesnt exist. Simplest as possible always works.
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post #4 of 7 (permalink) Old 04-13-2019, 03:28 AM
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since you are not dosing any fertilizers you likely have overflow nutrient levels. At very low levels algae can still grow. Plants however cannot. However if the plants have everything they need to grow algae in general doesn't do well. Your algae problem is related to the low nutrient levels. Also. So dosing potassium phosphate will not resolve your algae issue.
additionally your high nitrate and phosphate levels are likely due to the deficiency.

When plants cannot grow they will not consume nitrates and phosphates. Since your fish are constantly produce some phosphate and nitrate and your plants are not growing, nitrate and phosphate levels will build up.

You need to increase nutrient levels indoor aquarium What ever fertilizer you use right now you don't need to dose nitrate or phosphate. But once you get the nutrient levels resolved you might have to does nitrate or phosphate to keep those at adequate levels. Two fertilizers that might want to try are seachem comprehensive (it does have low levels of nitrate and phosphate. or seachem trace (no nitrate or phosphate) with and iron supplement (trace has no iron). Without knowing what is in your well water I cannot say if they will work. I would also suggest getting a GH and KH test kit some of your plants are exhibiting symptoms that might be caused by low magnesium or calcium levels You might also have a iron deficiency If your GH / KH levels are low you might have to add a GH booster to your water to increase calcium and magnesium levels. A liquid CO2 booster might also help control your algae while providing a carbon source your plants can use.
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post #5 of 7 (permalink) Old 04-13-2019, 05:37 AM
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Try Tetra FloraPride or API leaf zone, just follow the directions. Both add Fe and K which is most likely all you're missing.
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post #6 of 7 (permalink) Old 04-13-2019, 02:15 PM
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Aw. Like @cl3537 said, no one ever pipes up about the light. Beamswork @ 8 hours full blast? Way too much light for the goal of low to "no tech" how you run your light is what decides how much tech is needed to support your tank.
@ITHURTZ , it may help to spend some time on advancedplantedtank.com to get an understanding about the balance of plant growth

https://www.advancedplantedtank.com/...h-plllars.html

And then for your stated goal of low tech. Especially this page.

https://www.advancedplantedtank.com/101-lowtech.html

By the way, you cant really "not dose anything at all." A plant in this case is like a pet. Would you not feed your pet?

I suppose one can argue that you can technically achieve "not having to dose daily" in a low tech tank by changing your substrate or mess with root tabs and feed via roots only but that's just dosing in a different form.
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post #7 of 7 (permalink) Old 04-19-2019, 03:21 AM Thread Starter
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Sorry for the late response, kept forgetting to reply.

The GH and KH levels via test strip that I use just for giggles puts them both at max level for the well water. There are MTS in the tank and they seem to have no shell issues. The women always complains about the hardwater and her hair.

Algae issues from lack of other nutrients you say eh.... this just goes to show no matter how much you read and research you really cant learn everything by yourself.
Api leaf zone- chelated iron and potassium
Tetra Florapride- potassium and iron
Flourish comprehensive seems to have a boat load of stuff in it
flourish trace, seems to have stuff and as said added iron supplement.....

So is comprehensive overkill since its abundant in alot of things, or is baby steps the best approach, IE Api leaf zone?

As whats said in this said, another water change last week and the postassium phosphate remained at 2.0 didnt drop. Hope this next step gets everything under control.
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