Arrrhhh.... BBA

I am starting to get BBA all over my tank. I know this is usually a sign of low CO2 but this just doesnt seem possible in my case. Im running pressurized gas, my tank has a KH of 3 degrees. At lights on my PH test 6.0 with a Hanna PH pen, around lights off it test all the way down at 5.6 for whatever reason through the day I am getting a build up of CO2. Is this more likely the cause of BBA? or is it really a lack of CO2? i just dont really know how much more can be added and still have living fish, and its to the point where I feel the PH is to low as it is, let alone going even lower.
Im using an inline external reactor, it works very well within an hour I get the PH down to 6.... but then for whatever reason slowly over the course of the day it continues to drop down to 5.6 any thoughts on this?

 

Re: Arrrhhh.... BBA

Thanks for the Advice spar, I have been trying to get my tank in shape and things have improved since I started to dose a bit more, But phosphates I left alone thinking I had pleanty. Growth has still seemed slugish to me though, maybe thats it. Its a 75 gallon, and I have been doseing 3/4 t. of KNO3 and 1/8 t. of KH2PO4..... which is roughly 1.84 ppm per dose, or 5.52 ppm per week. Think I am running on the lean side with that?
Fish arnt gasping or looking stressed, I have cherry shimp also that seem to do fine just grazing all day long but it doesnt really seem like lack of CO2 would be the issue with dropping the PH so LOW. there has got to be a a decent amount. And no there really isnt any peat. I mean there was a thin layer on the bottom of the substrate when the tank was first set up over a year ago... but since then it has gone through a total rescape with all of the substrate taken and and rinsed clean taking out most of the peat.... but there is still a small amount mixed through out the substate.
I also had filter floss in my canister that had clogged up pretty good and slowed down the flow rate a pretty good amount. So i pulled that out tonight hoping to get the CO2 stable again, as it was when I first got the tank all set up, but as the floss clogged I started to have the trouble with the PH dropping over the day, So hopefully it will be more stable now. Guess ill bump up the PO4 to 1/4 t. also and see if that helps at all, cant hurt I have learned that much so far

 

Re: Arrrhhh.... BBA

To tell you the truth I dont think thats the problem at all, for months I had NO BBA at all in this tank using a single peguin 330 HOB filter.... no power heads in the tank. Plants grew well and No algae..... now I have made some lighting up grades and swiched to a canister filter, and swiched to a different method of trying to get the plants the nutrients they need.... and needles to say its been a strugle the entire time. Thanks for the reply, but I dont really want to see my fish pinned to the tank sides and my plants blowing over, and with all of the circulation from the canister filter alone, yes belive it..... things are already close to that.

 

Re: Arrrhhh.... BBA

thanks Tom, I didnt want to hear it.... but you said it! LoL Im going to work on getting the CO2 stablized so its the same through the day first, then add a bit more once things are more consistant..... I mean the fish and shrimp seem fine with the PH and CO2 levels now..... It just makes me wonder how low can I go with PH and still be in an acceptable range? Thanks for the replies!

 

Re: Arrrhhh.... BBA

LoL with a PH dropped down to 5.9, I really thought I was going to be the special one Oh well for whatever reason the PH KH relationship if off in my case, maybe something the city adds to the water, maybe from the small amount of peat, and drift wood in my tank. Who knows. Anyway im sure the slow increase in CO2 concentration over the day didnt help matters since things wernt staying stable. I pulled the filter floss from my canister last night (does a great job of polishing the water but gets clogged up fast!) and seems as thought the PH is going to hold stable through the day.... it was actually higher today now that flow rate in my filter was up to normal.... 6.2 when the lights came on, its usually at 6.0. so if it holds I will probably go down to around 5.7 or 5.8 depending on what my fish have to say about it

 

Re: Arrrhhh.... BBA

Yea Im not really all to worried about how low the PH is as long as its not going to have adverse affects on plant growth, the fish are south americans or acid loving fish anyway, pencils, sturisoma sp. and apistogramma's I don't think they will mind the PH at all, its just that do you get to a point where the extreme is reached and it affects plants growth in a negative way?
Also I am having trouble getting my CO2 to stay consistant through out the day. I am using an external reactor for the sole and only reason i dont want a bulky reactor inside of my tank. The CO2 NEVER drops, it just starts out at a good level and slowly raises through out the day. Has anyone found this to be a problem and incourge BBA? If so I may try the Mist method, locally I cant get sweet water stones but they do have those wood stones that put off a very fine mist, and im sure a few other products that produce a mist effect. Just for the sake of TRYING the mist method out, has any other type of mist stone be used with success so i dont have to order and pay for shipping? thanks for the advice everyone!

 

Re: Arrrhhh.... BBA

I was inspecting my tank getting a feel for how bad the algae is, and upon closer inspection Its pretty clear that what I have isnt BBA at all. I feel like a bit of a jack ***, It really does look like BBA at first, until you really take a look at it, and pull some out, and its clear its more of a short black hair algae of some sort, growing in single strands from what ever surface its attached to, about 1/4 of an inch long. And all of the strands just sort of clump and blend togeather making it look like the starting coat of BBA if not inspected very close.
Basically still seems like CO2? possible PO4? I really dont have much of a feel for how much is enough at each dose. Its tossed around all over that you can have levels of 2-3 ppm and its fine, thats great but how much PO4 actually needs to be added 3x a week to maintain that 2-3 ppm in the water at all times?
Until yesterday I was adding 1/8 t. KH2PO4 3x, I bumped it up to 1/4 t last night

 

Re: Arrrhhh.... BBA

Good deal Tom, thanks! that works out better for me and most because as you said, you can get limewood stones at pretty much any pet shop locally. Thats where I am headed I believe, I really like not having a reactor in the tank, and no bubbles all clear... etc. etc. etc.... but its also pretty clear that its hard to get consistant CO2 rates using an inline reactor, it is for me at least. I would rather have healthy beautiful plants with little algae.... and some misting bubbles around the tank than a clear cut view to... plain and simple an ugly algae mess.

 

Re: Arrrhhh.... BBA

I picked up one of those Lee's limewood stoned today on the way home from work, and of course with my luck the very top had a small crack in it allowing gas to escape, with out it being forced through the stone to make a mist. LoL
It was an easy fix though the crack was only about 1/8 down into the stone so i simply cut about a quarter inch off of the top, and glued the plastic air line connector back it. So im waiting for that to dry and I plan on getting this mist running. I dont think I really am going to mind the bubbles all to much, there cant be a high concentration of them since really all that is needed is a few bubbles a second or so to get enough CO2, so that shouldnt be to bad.
And from seeing some plants you are Growing in a recent post, I think some Tonina's you have set up in dutch row style, Man.... if my plants looked half that good I would be happy as heck So we will see how this works out.... im pretty much dumping the nutrients in there, there should be enough of everything..... so this HAS to be whats missing, I hope so at least im tired of tinkering and failing!
I will post about how its all going once I have the mist running a few days
thanks for all the help