Sufficient KH GH already without dosing - The Planted Tank Forum
 
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post #1 of 8 (permalink) Old 11-07-2015, 05:03 AM Thread Starter
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Sufficient KH GH already without dosing

My water out the tap is GH 8 KH 6 but my tank is GH 15 KH 9. I've only been dosing PPS Pro for few weeks now. I cant find a solid answer , all the plants and fish look fine as of right now . i have a high tech setup with co2. i have neon tetras and red cherry/amano shrimp. plants are Monte Carlo and Baby dwarf tears. Should i continue same dosage or cut back? modifiy PPS pro formula leaving out mgs04?

Fe .25
NH3/nh4 0
No2 0
No3 10
PO4 .25
PH >7.5

thanks in adavance!!
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post #2 of 8 (permalink) Old 11-07-2015, 06:24 AM
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How often and how much are you changing the water?

With that much of a difference I suspect a lot of minerals/salts are left behind from evaporation, and the water changes are insufficient to keep up.

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post #3 of 8 (permalink) Old 11-07-2015, 06:35 AM Thread Starter
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once a week at almost 50 percent, it is a Mr Aqua 12 gallon long, so it has more surface area which means more evaporation.
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post #4 of 8 (permalink) Old 11-07-2015, 06:42 AM
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I think the evaporation has a big role here. Either cut back on dosing or increase the WC. Maybe do 2 WC this week, see where you're at, then go from there.

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post #5 of 8 (permalink) Old 11-10-2015, 07:15 PM
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You should only replace evaporated water with straight RO or distilled water because evaporation leaves behind all elements except H2O. So every time you add tap water for top-offs you are increasing elements.

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Last edited by BigXor; 11-10-2015 at 07:17 PM. Reason: content
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post #6 of 8 (permalink) Old 11-11-2015, 03:36 AM
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Your water being hard, you could have the needed Mg in it or you may not. If you cannot confirm the Mg content from the specification of the water supply then the best course for you would be to continue dosing Mg as you are doing 50% weekly water changes. On the other hand if you want not to add to the hardness; you could leave out the Mg dosing but make it a point to look out for signs of Mg deficiency in your plants before going back to dosing Mg. It would also be good idea to use RO water for topping off.

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post #7 of 8 (permalink) Old 11-12-2015, 03:52 PM Thread Starter
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I've been topping off with RO now, also invested in an to unit. I've cut back dosing each day by .5 and have done water change every other day with straight RO. I got the levels down to gh6 kh4 ph7 couple days ago but it's creeping back up today at gh9 KH7 ph 7.5 I guess I'm just going to keep doing trial and error until I get a somewhat consistent level. The shrimp seem a lot more active with these
lower hardness levels.
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post #8 of 8 (permalink) Old 11-12-2015, 03:57 PM
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Quote:
Originally Posted by CaptainJeffy View Post
I've been topping off with RO now, also invested in an to unit. I've cut back dosing each day by .5 and have done water change every other day with straight RO. I got the levels down to gh6 kh4 ph7 couple days ago but it's creeping back up today at gh9 KH7 ph 7.5 I guess I'm just going to keep doing trial and error until I get a somewhat consistent level. The shrimp seem a lot more active with these
lower hardness levels.

A little at a time. Let your creatures have time to adjust.

The water will creep up until the tank substrate has had time to change.

IMO

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