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Discussion Starter · #1 ·
So I have a 55 gall planted tank , my plants in the beginning were growing great but I noticed the grass are getting light brown and yellow ish , same with the other plants , I run co2 , finnex light , all on timer the light is on for 8 hours and the co2 is on for 9 , I used the tropica specialised nutrition 3 pumps , I used the aqua soil also what can I do to bring life back to these plants please send some help
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might want to start your co2 a bit earlier. my co2 comes on 3 hours before the lights. it looks like you have decent surface agitation with the filter/pump outputs and surface skimmer. have you done the 1pt pH drop method to dial in your co2? properly adjusted, co2 will be at 30ppm when the lights turn on and remain relatively stable throughout the photoperiod.
 

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Discussion Starter · #3 ·
might want to start your co2 a bit earlier. my co2 comes on 3 hours before the lights. it looks like you have decent surface agitation with the filter/pump outputs and surface skimmer. have you done the 1pt pH drop method to dial in your co2? properly adjusted, co2 will be at 30ppm when the lights turn on and remain relatively stable throughout the photoperiod.
I have the co2 coming on 2 hours before the light actually and my ph is actually low at like 6
 

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I have the co2 coming on 2 hours before the light actually and my ph is actually low at like 6
Is there a chance you can measure the pH before CO2 is on and after it turns on? Most go for a 1 point pH drop. Also, how long have you had this tank set up? Aqua-soil can run out of nutrients, and the ferts dosed in the water column may not be enough after all the nutrients are used up. Yellowing in plants are usually (but not always limited to) nitrate deficiencies.
 

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Discussion Starter · #6 ·
Is there a chance you can measure the pH before CO2 is on and after it turns on? Most go for a 1 point pH drop. Also, how long have you had this tank set up? Aqua-soil can run out of nutrients, and the ferts dosed in the water column may not be enough after all the nutrients are used up. Yellowing in plants are usually (but not always limited to) nitrate deficiencies.
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This is the ph before the co2 turns on . I’ve been running the tank for 3 months
 

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My nitrate is steady at 20 ppm , and I ordered a phosphate tester Hopefuly I get it soon so I can test that also
Keep us posted.. If your phosphate levels are fine, your potassium levels should theoretically be fine as well since you're using an AIO fertilizer. In that case it may correspond with CO2 levels due to plant growth and mass increasing
 

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Discussion Starter · #11 ·
Keep us posted.. If your phosphate levels are fine, your potassium levels should theoretically be fine as well since you're using an AIO fertilizer. In that case it may correspond with CO2 levels due to plant growth and mass increasing
I will and my checker is always nice and green when the co2 runs , I got some flourish Root tabs hopefully those help
 

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This is the phosphate result
View attachment 1035166
Seems like your phosphates are definitely low. Phosphate deficiency can definitely be a big possibility since you're running co2 and co2 increases plants' nutrient uptake.. I would try to get kh2po4 dry ferts (or get a premade phosphate fertilizer) and dose atleast 0.25-1ppm and maintain it there. After a couple weeks they should bounce back in health.

EDIT: Also think about dosing EI. This rules out any plant deficiency possibilities as you're dosing in excess. It will also be cheaper in the long run (and initially, I think). Providing your CO2 and lights are tuned in (and from how beautiful your tank is, I don't doubt it) you shouldn't get any crazy algae as they'll always be in competition with your plant mass.
 
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