Just built a small tank for my office, cycling it at home. Took water & sand from existing tank and put in it for 2 weeks. Then transfered a piece of LR, within days, sealant turned yellow, thought it as just alge, but it won't wipe off. Been that way for about 10 days. Anybody seen this happen before? Will the yellow leach back out of the sealant?
Sealant suddenly turned yellow on new tank?
- Thread starter jeff1733
- Start date
Its genuine acquarium sealant, Got it from Glasscages.com. I'm sure it's ok. Funny thing is sealant is still clear under the sand and above the water line.
It wipes off, but comes right back after a day or two. I used GE 1 Silicone.bigfoot610
New member
maybe diatoms?
8BALL_99
New member
Is the silicone on your display Clear? I've heard that some additives can cause silicone to change color.. Thats why Oceanic and AGA have there Black Seal tanks. Heck for that matter I think thats all Oceanic uses now.. AGA you have to pay Extra.. My 180 was custom made in canada They also offered Black Silicone.. All of my tanks have black silicone on them. I hate the way clear looks when it changes like that.. Or even when its just dirty.
818
New member
I always give a whole week for it to cure. Have done a couple test and its all to not letting the sealent cure.
When your adding silicone to baffles you are not adding a thin layer, your adding around 1.5 to 2 inches on both sides of silicone and that will need way more that 1 day.
HTH.
Sam
When your adding silicone to baffles you are not adding a thin layer, your adding around 1.5 to 2 inches on both sides of silicone and that will need way more that 1 day.
HTH.
Sam
RichConley
New member
Cured mine atleast a couple days. Its GE II, windows and doors. Use TM for salt, just Kalc for additives.
Why doesn't everyone use a silicone meant for aquariums like all-glass sealant? Since the GE brand is not intended for aquariums they may tweek the process sometime as all manufacturers do from time to time and possibly add something you do not want. 100% silicone does not mean their is nothing else in there, doesn't the silicone with mildew resistant additive say 100% as well? At least if the product is specifically for aqauriums they know if they change something they should investigate the impact on fish and corals. I doubt GE would since they do not intend the product to be used like some are apparently using it. A 10 oz tube of all-glass sealant is $7.99 so the cost difference is not huge.
impur
New member
If its 100% silicon, how can there be other things in it? Then it would add up to say 107%? That makes no sense. If there are mildew resistant chemicals in it, the tube does not say 100% silicon, rather Pure Silicon mildew resistant for example. The stuff "for aquariums" is the same stuff in a different container and 2 to 3 times the price. Check the ingredients.
I would check the labels again, Impur. No offense but even the white silicone II with mildew resistence added (and obviously white coloring as well) says 100% silicone. I guess they could be saying they start with 100% silicone initially or the additives are so small in comparison but that is what they say.
impur
New member
Hmm, i have 8 tubes at home, 3 are mildew resistant and do not say 100% silicone. The other 5 are 100% silicone and do not claim to be mildew resistant. The mildew resistant ones have additional ingrediants. Just going by my experience, i guess its different in your part of the country. Or we are talking different brands or something.
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Nope, no different in this part of the country. Just click to enlarge the picture - Ge Silicone II found at Lowe's - 100% silicone, white and mildew resistant. Are your tubes old? Are they GE brand?
http://www.lowes.com/lowes/lkn?action=productDetail&productId=48285-72643-GE5040&lpage=none
http://www.lowes.com/lowes/lkn?action=productDetail&productId=48285-72643-GE5040&lpage=none
