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View Full Version : Need help with cloudy glass panel, what can be the cause?


firerock
10/27/2006, 09:36 AM
I have been using Randy's homemade recipe since April and have been very happy with the results. I have never encountered any problems until recently some odd events have been happening.

First, since the beginning of this month, impellers of all 4 powerheads in my tank has been clogged up one after another with what looks like Calcium buildup, I had to soak them in vinegar for days in order to get them to work again.

Then, day after a 30% water 2 weeks ago, I started getting this cloudy white deposits on the glass, mostly on the back panel, started with areas I have scrapped during the WC then spread to others. The deposits are smooth to the touch, and are a pain to scrap off. As soon I scrapped them off, it will soon be covered again in even larger areas.

http://www.photodump.com/direct/firerock/problem02.jpg

http://www.photodump.com/direct/firerock/problem01.jpg

http://www.photodump.com/direct/firerock/problem03.jpg

http://www.photodump.com/direct/firerock/problem04.jpg

Finally, I have noticed that the last batch of ALK I have made with Baking soda seemed to be dissolved completely, the bottle looked clear and no visible deposits, however, when I dose it into the tank, they looked "flaky", but quickly got blown away by the powerhead.

I checked the parameters of my water, although some seems to be on the lower side, they seem to be within range. Calcium 400, ALk 2.5 meg/L, borate Alk 0.1 meg/L, Magnesium 1300, PH 8.15, no detectable phosphate and silicate. All checked with Seachem testkits, and all testkits were checked against reference for accuracy. Temperature are kept between 78 - 80 degress.

In the past 2 month, I have been dosing the tank with 180ml of each part of the homemade recipe, does this seem a lot for a 46 gallon mixed reef tank? Corals has shown some growth, and there's no visible signs of stress, except for a toadstool that has not been opening up for 3-4 days.

What can be the cause of this problem? I have posted the question on Randy's forum, but thought maybe I'll get more responses here. This problem is really getting VERY annoying. Thanks for any help anyone can provide.

smcnally
10/27/2006, 09:40 AM
You are overdosing the suppliment. The flakes you are seeing is actually the calcium and alkalinity clashing and causing the calcium to condensate and "Snow" in the tank. This will also cause your calcium level in your tank to drop when this happens.

ObscurityKnocks
10/27/2006, 09:46 AM
My guess is that you are dosing the CA and ALK portion right next to each other immediately right? When they are highly concentrated and mix together it causes a precipitation to occur which is what I believe you are seeing.

When I used the same measuring cup to dose both CA and Alk the same thing happened in the measuring cup.

That is about 6.4 fl oz. I dose 3.5 fl oz on a 240 gallon aquarium. My aquarium has 3 small colonies and 15 or so medium sized frags.

I would suggest dosing one part give it a couple minutes to disperse throught the aquarium and then add the other part.

Unfortunately the only way I could get the cup clean was soaking in diluted vinegar.

firerock
10/27/2006, 09:48 AM
smcnally, thank you for solving the mystery. :)

firerock
10/27/2006, 10:03 AM
ObscurityKnocks, thanks for the tip. Although I don't think that's what caused my problems, but it probably contributed to it.