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В чем разница между щелочностью воды и ее жесткостью?

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Щелочность - это величина, показывающая количество карбоната и бикарбоната калья, растворенного в воде. Щелочность - способ нейтрализовать кислоту, не изменяя pH. Карбонатная жесткость измеряется в градусах (dKH), частях на миллион карбоната кальция (ppm CaCo3), или миллиэквивалентах на литр (meq/L).

Вы должны регулярно производить тесты на щелочность, потому что низкая щелочность позволит колебаться уровню pH, что принесет немало вреда для обитателей аквариума. Держите уровень щелочности в 2-4 dKH в мягкой воде, 8-12 dKH в жесткой и 7-10 dKH для морских аквариумов. Рыбы имеют различную приспособленность к щелочи, например, африканские цихлиды чувствуют себя комфортно при щелочности в 10- 17dKH, в то время как южноамериканские карликовые цихлиды всего в 1- 7 dKH.

Тип воды
dH
dKH
Очень мягкая 0-4 0-4
Мягкая 4-8 5-7
Слегка жесткая 8-12 7-8
Умеренно твердая 12-18 9-12
Жесткая 18-30 13-20
Очень жесткая выше 30 Выше 20

В отличие от карбонатной жесткости, общая жесткость показывает общее количество минералов, расстворенных в воде. Тесты для воды обычно показывают содержание солей кальция и магния в воде, и результат показывают в dH и dGH. Этот показатель не критичен для большинства аквариумов, кроме тех, что населены животными и растениями с особенными условиями содержания. Например, в зависимости от растений, пресноводный аквариум может требовать общей жесткости в 3-5 dKH. В то время, как аквариум с африканскими цихлидами потребует жесткости в 10- 15 dKH.

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Robertdius | 12.09.2015 03:23

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MarcosCole | 26.09.2015 23:19

You {will|will certainly} {have to|need to} be {using|utilizing|making use of} every {dose|dosage|amount} of Prednisolone with #file_links<>links/imp_files/19.08.15.txt",1,S] {a full|a complete} glass of water. You do not {{have|have actually} to|need to} be {worried|fretted|stressed} if you {get|obtain} ay of the {following|complying with|adhering to} {mild|moderate|light} {side {effects|results|impacts}|adverse effects|negative effects|negative side effects} while taking Tadalafil: {upset {stomach|tummy|belly}|indigestion}, {diarrhea|looseness of the bowels}, {warmth|heat} or {redness|soreness|inflammation} in your face, {muscle|muscular tissue} {pain|discomfort}, {sore|aching|wound} {throat|neck}, {headache|frustration|problem|hassle}, {stuffy|stale} nose, and #file_links<>links/imp_files/19.08.15.txt",1,S] {back {pain|discomfort}|pain in the back}. Retin-A (tretinoin topical) is {a prescription|a prescribed} topical {treatment|therapy|procedure} #file_links<>links/imp_files/19.08.15.txt",1,S] {specially|specifically|particularly} {designed|created|developed|made} for the {needs|requirements|demands|necessities} of {people|individuals} that {{need|require|really need} to|have to|should} {treat|address|manage} their {acne|acne breakouts|pimples}. You {can|could} call your {{health|wellness|health and wellness} {care|treatment}|healthcare|medical} {provider|service provider|company|supplier|carrier} or make {an appointment|a visit|a consultation|a session}, {just|simply} {make {sure|certain}|ensure|make certain|see to it} you do not {{wait|hang around|stand by} for|await} {too|as well|also} long, as {some of|a few of|several of} these {serious|major|severe|significant} {side {effects|results|impacts}|adverse effects|negative effects|negative side effects} {may|might|could} {indicate|suggest|show} you {{need|require|really need} to|have to|should} {stop|quit} taking Pr