Ei dosing, how to tell im dosing enough or not enough - The Planted Tank Forum
 
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post #1 of 11 (permalink) Old 07-11-2009, 08:29 PM Thread Starter
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Ei dosing, how to tell im dosing enough or not enough

So Ei method is to be a non limiting method of nutrients right? Since the general dosing guidelines are just merely used as a starting point, obviously the more plant load and lighting the dosing increases. So with a large plant load how am i suppose to know i have dosed enough, not too much not too little (don't want to be wasting too much nutrient powder since i do water changes once a week and i've been dosing daily)? I know i can look out for deficiencies in the plants. But lets say i haven't seen any. All the plants are green and growing. I have this ongoing battle with rhizoclum on my moss and specifically a corner of my tank. That's just about the only algae i have a problem with.

So I'm in the process of finding the problem. My lighting system is 54wx2 TH50. I have it raised to 25" above the tank. Initially it was 18" then to 21" and now 25" above the tank because i figured i can reduce my light intensity more to battle rhizo on the moss since it was closer to the light. My Co2 injected setup turns greenish yellow by the end of the 8hr photoperiod. I run a fx5 filter cranked very low so there isn't excessive current. I'm doing 1tsp of kpo3, 2tsp of kno3, 1tsp cms+b all on a daily basis. 50% water changes are done once a week.

Help me find my weak spot. Thanks
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Last edited by o snap its eric; 07-11-2009 at 10:32 PM.
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post #2 of 11 (permalink) Old 07-11-2009, 08:55 PM
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My first thought would be it's probably not a fert issue as that all sounds right but that that corner of the tank has little to no flow for the algae to grow better in.

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post #3 of 11 (permalink) Old 07-11-2009, 09:04 PM
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Agreed! You might increase the water from from your filter to move the nutrients around better. You may have to increase your co2 also, if you get more surface turbulance.
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post #4 of 11 (permalink) Old 07-11-2009, 09:56 PM
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What size is your tank?
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post #5 of 11 (permalink) Old 07-11-2009, 09:58 PM Thread Starter
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my tank size is 60g 48" long, 18" wide, ~18" tall, more pics
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post #6 of 11 (permalink) Old 07-11-2009, 10:04 PM
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You must have been adding the pictures as I was posting. Hope the fert dosages you mention in your first post are the amount you are adding total for the week? They look way too high as daily dosages for a tank your size. Ferts wouldn't cause the problem with the moss though.
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post #7 of 11 (permalink) Old 07-11-2009, 10:17 PM
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Quote:
Originally Posted by captain_bu View Post
You must have been adding the pictures as I was posting. Hope the fert dosages you mention in your first post are the amount you are adding total for the week? They look way too high as daily dosages for a tank your size. Ferts wouldn't cause the problem with the moss though.
Agreed EI is an over dose to begin with so I don't think that's your problem but hopefully plantbrain will respond to this thread to give better advice.

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post #8 of 11 (permalink) Old 07-11-2009, 10:54 PM
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Quote:
Originally Posted by captain_bu View Post
You must have been adding the pictures as I was posting. Hope the fert dosages you mention in your first post are the amount you are adding total for the week? They look way too high as daily dosages for a tank your size. Ferts wouldn't cause the problem with the moss though.
Ditto, but what the heck?
That's what I'd dose for a 200-300 gallon tank daily.
Those are more a weekly or more rates.

EI is already scaled to the top end of lighting, so there's no need to add "more".
From there, once things are doing well, have no algae etc, then you can reduce the rates back slowly step wise if you chose.

CO2 is still an issue and makes much more of a difference vs any other nutrient dosing routines.

You have poor moss growth, so you also have a CO2 issue.
Fix that, add a horde of shrimp and they will clean it up pretty fast.

Blackout for 3 days will kill off the Rhizo.
You need to focus on the CO2.
Water changes are good also, dose after those.
Consider some Excel till you get the CO2 right

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post #9 of 11 (permalink) Old 07-11-2009, 11:31 PM Thread Starter
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thanks everyone, i didn't know my dosing was so extreme. I'm glad i asked this question. This maybe also be the reason why i can't keep any amano shrimp alive. Water is too poisonous for them =(

I'll continue to bump the CO2 and see where it gets me to with this problem.
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post #10 of 11 (permalink) Old 07-12-2009, 05:18 PM
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Quote:
Originally Posted by o snap its eric View Post
thanks everyone, i didn't know my dosing was so extreme. I'm glad i asked this question. This maybe also be the reason why i can't keep any amano shrimp alive. Water is too poisonous for them =(

I'll continue to bump the CO2 and see where it gets me to with this problem.
Do a few good sized water changes, watch CO2 really good, watch plants, fish etc for good positive signs.

Tank should pearl really well a few hours in.
Moss will take a few days, weeks to bounce back, but should nonetheless.

Might just remove it and then add fresh moss once the CO2 is going well.
Poor moss growth is a good sign of poor CO2.
They need hardly any nutrients, and light, so not much is left at that point other than CO2.

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post #11 of 11 (permalink) Old 07-12-2009, 05:50 PM
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Yeah, way way way too much ferts. I dose 1/4 of that on a 75g with 4x54w T5s 3 inches above the surface.
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