Tank Cloudy With Co2 But Getting Bba?

How much algae are you getting? It's quite hard to tell from the photo. Also some others details might help - how old is the tank, what filtration, what lighting, how are you treating the algae etc

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How is your water current circulation? I don't know if this correct in English.

 

The best recipe for BBA is high light with low/inconsistent CO2. Coincidentally, this is also the best recipe for unhealthy plants, which will compound, if not initiate, BBA issues. Further, you don't have a large plant mass yet, which can mean that you will be fighting the high light effect (if you have high light) in creating BBA. A .5 pH drop does indicate that you don't have enough CO2 and bps is not the best way to measure CO2, although I think you are mentioning it simply to demonstrate what seems to be a high CO2 injection rate. I would push it until you get that full 1-point pH drop, using your fish as guides for when you over do it. Once you reach, and hold, the pH drop, wait a few weeks to see if the BBA improves. I prefer reactors to diffusers, and my tank is a 29-gal. I believe that larger tanks are better served by reactors, if you don't like the mist that is created by diffusers.

GSA can often be fixed with increased PO4.

As easternlethal mentioned, it would be good to have more info, so we can better understand the possibilities. Details I like to know are:

- Light (make & model): ideally, PAR and PUR reading at the substrate and photoperiod?
- Current NO3, PO4, GH, KH, pH and TDS readings and which test kits are used for each?
- What you are dosing (product and quantity) and how often?
- How old is the Amazonia?
- What is your filter setup?
- Cleaning regimen (filter and water change frequency and amount)?
- Circulation: surface rippling and are all plants gently moving from top to bottom?
- What is your water source and do you use a water softener?

 

CO2: I’ve used diffusers and, although there are studies that indicate that plants may do better by direct contact with CO2 bubbles, I found only slightly improved performance but, in my case, it wasn’t worth the cloudiness that diffusers impart at high CO2 levels. There are several things to consider as to why your pH is not dropping as you think it should:

- Are you certain that you are getting good pH test results? pH pens are much more accurate than reagent kits and test strips are virtually useless unless you are just looking for a vague estimate.

- CO2 bubbles rise to the top. It is difficult to get good distribution, especially in a large tank, without circulation that allows you to see if contact is occurring. Perhaps placing a drop checker in the area having the lowest circulation would help confirm CO2 saturation levels.

- Diffusers vary: some are good and some are not. What type do you have?

If you truly have low light, more CO2 may not help, but I would try to get pH to a verifiable 1-point drop to test that possibility.

With the Amazonia only 5 months old, you should be getting all the nutrients necessary between that and your dosing. I’d guess that you are overdosing some nutrients. Can you provide the test results for the parameters I mentioned in my previous post?

This may be a simple matter of insufficient plant mass. If it were me, after I was certain of the above things being satisfactory, I would begin dosing Excel to see if it would help. Excel not only provides a little carbon to the plants (which the CO2 should e doing far better) and it also acts as a mild algaecide at recommended dosing levels.

 

I should rephrase my question. I mean is there any dead spot like no or weak flow or circulation? If you have CO2 checker, can you move it to the spot where you get bba to check CO2 level at that spot?

 

I think that what she meant - rich of nutrients but not enough plants to take advantage from it. This is when algae appear.

As for GSA even if you fixed the deficiency that caused it, you still need to manually remove them. They don't go away by themselves. GSA is the least of my concern anyway.

You can drain the water until where the BBA grow exposed. Using a small paint brush, apply excel to the affected area let it sit for a while & fill the water back up.

 

It does appear that your diffuser and measuring of CO2 is good. Which leaves not enough (given tolerance for the cloudiness) or inconsistent CO2 as the thing to focus upon. The reactor will eliminate the cloudiness that you don’t like and, if it is sized correctly, should easily give you the 1-point pH drop.

Let us know the results of your GH and PO4 tests, to make sure that your nutrients are balanced (those that you are measuring).

As kizwan mentioned (although I’m a “he” not a “she”), EI is designed to ensure sufficient quantities of nutrients mainly in high-tech setups, but has nothing to do with plant mass other than determining dosing adjustments. Sometimes, there are simply not enough plants, given a tank size, to be able to out-compete algae. Looking at your tank, I think this is a possibility. Incidentally, BBA is commonly prevalent in high flow areas.

Glut is well-known to provide carbon (not nearly as much as pressurized CO2) and is gone in about 24 hours and Vals can be trained to accept it. However, even though it decomposes, I would also hesitate to want to risk putting it on something I eat. Seachem’s denial is not about carbon, it is about their ingredient. They will not confirm that their ingredient is glut. There is one thing, though, where the Excel may be useful for you: when you reach fully stabilized parameters, and if the BBA is still present. It can be killed with a single, heavy, dose of glut, which will not affect sensitive plants, fish and, at least Amanos and CS. To do this, add 1ml / gal and provide heavy rippling of the water’s surface (pH below 7 is also helpful). This is a one-day treatment that can be repeated weekly.

I still think the primary problem is inconsistent / low CO2 (having a good measurement of PAR/PUR values for your light would close the remaining knowledge gap). Once you achieve that 1-point drop and hold it consistently for several weeks, with no other changes during this period, I think your algae problems are most likely to be reduced by fully healthy plants. Algae growing on plants is a sign that they are not as healthy as they can be.

Now, I’m going to suggest another possibility that is completely the reverse of the CO2 aspect I mentioned above. Slow growing plants under low light (knowing the true PAR value of your light may be critical) do not need pressurized CO2, so it may be useless. However, BBA does like lots of CO2. It may be better to stop CO2, after trying the above. It is a matter of finding that combination of things that makes healthy plants and I see yours as questionable at this time.

 

Yet it doesn't kill BBA? There is a video on YouTube that I watched before & I managed to track it down again. He use mixture of excel & h2o2 to spot treat BBA. He claimed all BBA died overnight. I include link to the video below. Maybe it helps.

 

Yeah if it is coming back, you do need to find the root cause. I still believe BBA reappearing is because fluctuating CO2.

 

Different spots in the tank can have different CO2 level. That's why I asked before if you have CO2 checker to move it around the tank to make sure you have stable CO2 level everywhere.

Up CO2 more until you see fish gasping for air at the water surface. Then turn down a bit until your fish no longer gasping for air.

Good luck!

 

Late to the party but here are 2 thoughts...

Not sure what wood you have in there but I had wood similar to what you have that would not get rid of BBA. No matter what I did with Excel or h2o2. Finally gave up and removed the wood. BBA went away. Took a month or so clipping leaves at every water change though. YMMV.

For that amount of plants I'd say 6 hours of full intensity lighting is too much (does your led ramp?). Pic below is at 3 hrs 100%, 3 hrs at 50% everyday. Co2, EI dosing. Please excuse the mess, I've been on vacation and the tank hasn't had a water change or plant clipping for over 2 weeks now.

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