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Float type hydrometer broken

angmoh

By angmoh,
in General Reefkeeping_

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angmoh Newbie

angmoh

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i have a Sera floating type hydrometer.

The bottom part is broken and alot of small small black balls come out ... ermm i'v tried to siphon out 90% of the black balls out... wondering the remaining one will leak any toxic to the tank ?

what are those black balls ? are they lead balls?

also, today i noticed that there's a significant grwoth of the algae on the glass and LR, green ones. is it caused by the balls ?

my tank still under cycling stage. 5th day.

i just turn on 2 x actinic blue only. yesterday the tank still very clear of algae. this evening, the algae all grow almost 60% of the glass and some on the LR ....

pls advise.thanks

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