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post #1 of 5 (permalink) Old 01-22-2016, 12:28 AM Thread Starter
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Fert question

Hey all,

So, my main tank is an 80 gallon low-tech setup. All sword plants with a wall of Italian Val along the back (though it's not doing as well as I thought it would). My light is a Fluval Aquatic Life Freshwater Planted LED, the original version, not the 2.0. I haven't been able to find good PAR data on it. It's the one that fits a 48 inch tank. I'm pretty sure it's fairly low light, but don't quote me on it.

My question is, I got ferts in today from Green Leaf Aquariums to do the EI method on a high tech tank I will be setting up soon, and was wondering if it would be beneficial to dose these at low levels in my current tank. I do get occasional holes and yellowing of leaves on my swords. All I've been doing up until now has been dosing Flourish Comprehensive at water change once a week, and occasional Seachem Iron or Potassium if the mood strikes me. I have Excel, but didn't want to kill my vals.

I've also been having an ongoing battle with algae, but assumed it was from slow-growing plants in a low-tech tank.

Thoughts?

PS. I can't have any stem plants because it is a barb tank and my Black Ruby Barbs love eating plants.

80g Low-tech Barb tank
20g low-tech
Coming Soon! Ada 60p High tech!
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post #2 of 5 (permalink) Old 01-22-2016, 03:35 AM
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I have black ruby barbs in my planted tank and I haven't seen any problem at all from them eating plants. As far as I have seen they just don't eat plants at all. I suggest you try some stem plants, like rotalas or hygrophilias, just to see what happens. You can probably get a few very cheaply at the For Sale forum here.

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post #3 of 5 (permalink) Old 01-22-2016, 03:42 AM Thread Starter
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Appreciate the input...

I had rotala, ludwigia, and others I can't remember, and they decimated them as soon as I put the Black Rubies in the tank. They even eat new anubias leaves and new sword leaves.

Prior to the black rubies, it was just oto's, cories, denison barbs, and rosy barbs and my plants did great. Then the rubies entered the scene and it was a barren plant wasteland lol

80g Low-tech Barb tank
20g low-tech
Coming Soon! Ada 60p High tech!
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post #4 of 5 (permalink) Old 01-22-2016, 02:10 PM
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You can adjust the dosing to suit the tank.

If you have not been dosing any nitrogen, what is the NO3 doing? This is testing NO3 from fish food.

Fish food supplies reasonable amounts of N, P and most traces.
Fish food is low in C, K, Fe, Ca and Mg.

Water with GH over about 3 German degrees of hardness usually supplies enough Ca and Mg, though you could supplement with some GH booster if you want.

For a low tech tank with a reasonable fish load, the NO3 may hover or climb slowly between water changes, suggesting the plants also have enough P and most traces.
Dose K, Fe and C (Excel is fine for Vals, just do not dose the loading dose).

If the plants are removing pretty much all the NO3, then dose some N, P and traces, but you might go with a very low dose. Just enough to keep the NO3 about 10-20ppm.
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post #5 of 5 (permalink) Old 01-22-2016, 11:45 PM Thread Starter
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Quote:
Originally Posted by Diana View Post
You can adjust the dosing to suit the tank.

If you have not been dosing any nitrogen, what is the NO3 doing? This is testing NO3 from fish food.

Fish food supplies reasonable amounts of N, P and most traces.
Fish food is low in C, K, Fe, Ca and Mg.

Water with GH over about 3 German degrees of hardness usually supplies enough Ca and Mg, though you could supplement with some GH booster if you want.

For a low tech tank with a reasonable fish load, the NO3 may hover or climb slowly between water changes, suggesting the plants also have enough P and most traces.
Dose K, Fe and C (Excel is fine for Vals, just do not dose the loading dose).

If the plants are removing pretty much all the NO3, then dose some N, P and traces, but you might go with a very low dose. Just enough to keep the NO3 about 10-20ppm.
Thank you very much! My nitrates last time I tested were somewhere between 5-10. So, I might dose a tiny bit of that. I use remineralized RODI water with 6 dGH and 3 dKH. So, I should be fine on Ca and Mg hopefully. I'll take your advice and dose K, Fe, and Carbon...should I do so daily??

80g Low-tech Barb tank
20g low-tech
Coming Soon! Ada 60p High tech!
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