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Lnummers.nl • Toon onderwerp - Water testen

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Water testen

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Re: Water testen

Berichtdoor mayk » 08 okt 2011 22:19

heb in 25 jaar nog nooit getest,is altijd goed geweest,nooit geen rare dingen meegemaakt.
heb wel in al mij bakken thermometers,dit ook in de vorm van stickers van tetra,deze dingen wijken 1 graad af,maargoed dat weet ik dus daar houd ik rekening mee,vind de temp wel HEEL belangrijk,voordat je t weet slaat er een therostaat op tilt of doet t niet meer,dit heb ik al meerdere keren meegemaakt.dus testen nee temp ja.
verslaafd aan malawicichliden en alle soorten meervallen.
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Re: Water testen

Berichtdoor john24 » 09 okt 2011 13:03

Om goede thermometers te krijgen is overigens nog lastig. Ik had hier een paar aquarium thermometers en ook een paar digitale van de 6 stuks was er niet 1 die de zelfde temp aangaf terwijl ze wel in de zelfde bak zaten. Ofwel een goede thermometer is nog lastig te krijgen.
Ook de kwik thermometers die ik heb wijken af. Hoe ik dat gemeten heb? Ik neem heel koud water en vul deze verder met ijs. We weten van smeltend ijs dat dit 0 graden is dus na een half uur zit er nog steeds ijs in het water maar weet ik dat de temp 0 graden van het water is. Vervolgens deed ik de kwik thermometers er in. De schaalverdeling van deze thermometers is van -10 tot 50 graden. Dus zo kan ik redelijk nauwkeurig meten hoeveel elke thermometer afwijkt. En zelfs deze thermometers wijken iets af ( zijn al wel wat ouder maar zijn wel laboratorium thermometers ) en met iets bedoel ik minimaal 0.5 graden maar had er ook 1 tussen van 2 graden.
Hoe meten jullie zo nauwkeurig mogelijk de temp?
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Re: Water testen

Berichtdoor Jacqueline » 09 okt 2011 20:00

Ik hecht niet zo heel veel waarden aan de temperatuur. Ik kijk globaal. Het moet voor mij tussen de 28-32 graden blijven, dat vind ik acceptable. Voor de discussen hou ik 30 aan.

Ik gebruik ook de gele met rood gevulde olie thermometers. Ik heb een beetje schrik van Kwik thermometers gekregen nadat ik er achter kwam dat bij breuk het zeer schadelijk voor de vis is, dodelijk zelfs.....
In de kweekstelling hangen overal deze meters, ookal loopt het systeem op 1 filter. Hoe verder de bakken verwijderd zijn van het filter, hoe langer het water onderweg is. In die tijd koelt het 1 tot 2graden af. Ook de onderste bakken zijn koeler dan de bovenste. Vandaar dat ik overal de temperatuur in de gaten hou.

Waterwaardes meet ik alleen in de stelling. Dan gaat het mij alleen om de NO3 en de microsiemens. PH en KH zijn hier prima uit de kraan.
Toen ik nog een plantenbak had met mijn discussen moest ik wel wekelijks de KH waarden meten!! Door het toevoegen van CO2 voor mijn planten daalde de PH teveel. Mijn KH bleek onder de 2 te vallen waardoor ik kans liep op een PH val :? Ik moest wekelijk KH+ toevoegen om alles stabiel te houden.
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Re: Water testen

Berichtdoor mayk » 09 okt 2011 21:51

oliethermometers= met die rode en blauwe vloeistof erin ???
ik dacht altijd dat dat alcohol was,heb toen mijn kwikthermometers ook allen vervangen voor wat ik dacht alcohol thermometers.
verslaafd aan malawicichliden en alle soorten meervallen.
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Re: Water testen

Berichtdoor john24 » 09 okt 2011 21:55

Temp met apisto's is wel heel belangrijk. te laag is 95% van het ene geslacht te hoog 95% van het andere geslacht.
En idd kwik is giftig ook voor de mens maar ze zijn wel een heel stuk nauwkeuriger dan olie thermometers en aquariumthermometers zijn gewoon ondingen die vaak meer dan 3 graden afwijken.
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Re: Water testen

Berichtdoor Nick » 09 okt 2011 22:37

heb toevallig 4 weken geleden het water weer eens laten testen bij de lfs en dat omdat er ineens alg verscheen in de bak
verder doe ik het zelden
de kweekbak krijgt 2x per week vers water en de grote bak 1x per week dus vertrouw ik er maar op dat het goed gaat
en ik heb digitale thermometers inde bakken
[color=#FFFFFF]5x L-66[/color]
[color=#FFBF00]1x L-134[/color]
[color=#008000]1x L-200[/color]
[color=#000000]1x LDA-33[/color]
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Re: Water testen

Berichtdoor Jessey » 10 okt 2011 21:36

Ik moet heel eerlijk zeggen dat ik m'n water nooit test.
Toevallig heeft johanx van het forum een paar maanden geleden alle waardes getest, en volgens hem zag het er goed uit.

Ik verdiep me er tot nu toe nog niet zoveel in dus heb er ook niet zoveel verstand van.
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