Exhibit 31.2

                               CERTIFICATION

I, Blaine Davidson, certify that:

1. I have reviewed this Annual Report on Form 10-K of Hydrodynex Inc.;

2. Based on my knowledge, this Report does not contain any untrue statement
of a material fact or omit to state a material fact necessary to make the
statements made, in light of the circumstances under which such statements
were made, not misleading with respect to the period covered by this Report;

3. Based on my knowledge, the financial statements, and other financial
information included in this Report, fairly present in all material respects
the financial condition, results of operations and cash flows of the small
business issuer as of, and for, the periods presented in this Report;

4. The small business issuer's other certifying officer and I are responsible
for establishing and maintaining disclosure controls and procedures (as
defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control
over financial reporting (as defined in Exchange Act Rules 31a-15(f) and
15(d)-15(f)) for the small business issuer and we have:

a) Designed such disclosure controls and procedures, or caused such
disclosure controls and procedures to be designed under our supervision, to
ensure that material information relating to the small business issuer,
including its consolidated subsidiaries, is made known to us by others within
those entities, particularly during the period in which this Report is being
prepared;

b) Evaluated the effectiveness of the small business issuer's disclosure
controls and procedures and presented in this Report our conclusions about
the effectiveness of the disclosure controls and procedures, as of the end of
the period covered by this Report based on such evaluation; and

c) Disclosed in this Report any change in the small business issuer's
internal control over financial reporting that occurred during the small
business issuer's most recent fiscal quarter (the small business issuer's
fourth fiscal quarter in the case of an annual report) that has materially
affected, or is reasonably likely to materially affect, the small business
issuer's internal control over financial reporting; and

5. The small business issuer's other certifying officers and I have
disclosed, based on our most recent evaluation of internal control over
financial reporting, to the small business issuer's auditors and the audit
committee of the small business issuer's board of directors (or persons
performing the equivalent function):

a) All significant deficiencies and material weaknesses in the design or
operation of internal control over financial reporting which are reasonably
likely to adversely affect the small business issuer's ability to record,
process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other
employees who have a significant role in the small business issuer's internal
control over financial reporting.


Date:   September 28, 2008

/s/ Blaine C. Davidson
----------------------
Blaine C. Davidson
Chief Financial Officer, Secretary and Treasurer
(Principal Financial and Accounting Officer)



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